Pre-filter

Compact Sieve II Sieve Bow Filter Pre-Filter Pump Version: The Efficient Solution for Koi Ponds The Compact Sieve II Sieve Bow Filter Pre-Filter Pump Version is an affordable yet powerful filtration system from Aquaforte, specially designed to remove coarse dirt particles from pond water. With its 300-micron stainless steel sieve element and a size of 24 cm x 40 cm, the filter ensures excellent water quality and is ideal for koi ponds with a volume of up to 15,000 liters. Durable Materials and Thoughtful Functionality Made from long-lasting polyethylene, this pre-filter combines a solid construction with an attractive price-performance ratio. The pump version of the Compact Sieve II allows for easy installation and is designed for flow rates of up to 15,000 liters per hour. The filter is perfect for use in a wide variety of pond setups. Technical Details and Accessories Dimensions: With compact dimensions of 49 cm x 32 cm x 55 cm, the filter fits even into smaller systems. Connections: Equipped with a 3-step hose tail (25 mm / 32 mm / 40 mm) at the inlet and a 75 mm outlet. Overflow Protection: Integrated overflow protection also with 75 mm connections for safe and efficient water drainage. Dirt Drain: Flexible sleeve and 63 mm slide valve included for convenient disposal of waste. Scope of Delivery: Delivered complete with lid, hose tail, PVC T-piece and PVC elbow – ready for immediate use. Ideal for Small to Medium-Sized Koi Ponds The Compact Sieve II Sieve Bow Filter Pre-Filter Pump Version is a cost-effective solution for koi pond owners who value reliable filtration performance. With its ease of use and high-quality materials, it offers a practical and durable method for maintaining your pond system. Improve the water quality of your koi pond with the Compact Sieve II Sieve Bow Filter Pre-Filter Pump Version – the affordable choice for clear and healthy pond environments!

Fiap BioSieve Active 50000 Pond Pre-Filter Gravity: Innovative Filtration System for Koi and Swimming Ponds The Fiap BioSieve Active 50000 Pond Pre-Filter Gravity is a powerful and well-thought-out filtration system that combines both mechanical and biological filtration technologies. This system provides optimal cleaning for koi ponds with a volume of up to 25,000 liters and swimming ponds up to 50,000 liters. It impresses with high-quality technology, effective dirt removal, and ease of use. Advanced Technology for Perfect Water Quality The SpaltSieb Active mechanically removes coarse dirt particles starting from a size of 300 microns, which are directly flushed into an integrated dirt gutter. The pond water is then treated in the biological chamber with 4 BioSafe Active filter cartridges, providing an impressive filter surface area of 180 m². Additionally, the integrated aeration membrane ensures optimal oxygen enrichment. Technical Details and Features Mechanical and Biological Cleaning: Dual filtration system for maximum efficiency. Filtration Capacity: Maximum flow rate of 20,000 liters per hour. Durable and Long-Lasting: Made of stainless steel with a 5-year warranty. Connections: Inlet and outlet each DN 150, dirt outlet with 2 x DN 50 for optimal flexibility. Dimensions: Dimensions of 625 mm x 500 mm x 1100 mm, weight 57 kg, ideal for space-saving installation. Filter Cartridges: Four filter cartridges (dimensions 220 x 300 mm) for efficient biological breakdown. Versatile Applications This system is ideal for maintaining both koi ponds and swimming ponds. It combines mechanical water treatment, excellent coarse dirt removal, and powerful biological breakdown performance, perfectly synchronized. Why Fiap BioSieve Active 50000? The Fiap BioSieve Active 50000 offers cutting-edge filtration technology that not only ensures crystal-clear water but also relieves subsequent biological filter media. This way, you enjoy maximum efficiency and minimal maintenance in pond care. Invest in this high-quality filtration system and create a healthy environment for your fish and water features!

Fiap BioSieve Active 50000 Pond Pre-Filter Pump Version: High-Performance Filter for Koi and Swimming Ponds The Fiap BioSieve Active 50000 Pond Pre-Filter Pump Version combines mechanical and biological filtration technologies, offering an outstanding solution for koi ponds up to 25,000 liters and swimming ponds up to 50,000 liters. This advanced pre-filtration system guarantees thoughtful pond technology for excellent water quality. Advanced Technology for Optimal Pond Care The SpaltSieb Active efficiently filters coarse dirt particles from 300 microns, before the cleaned water is directed into the biological chamber. There, 4 BioSafe Active filter cartridges with an impressive filter surface area of 180 m² provide effective biological water treatment. The integrated aeration membrane further optimizes oxygen supply and supports the ecological balance in the pond. Technical Highlights and Customization Options Efficient Filtration Performance: Maximum flow rate of 20,000 liters per hour for optimal results. Robust Construction: Stainless steel housing for durability and reliability with a 5-year warranty. Easy Integration: Inlet connection: 2 x 1 1/2" internal thread. Outlet connection: DN 100, optimized for various pump systems. Dirt outlet: 2 x DN 50 for easy and efficient waste removal. Compact Dimensions: With 625 mm x 500 mm x 1100 mm and a weight of 54 kg, the system fits even in limited space. Filter Cartridges: Four cartridges with dimensions 220 x 300 mm for powerful biological breakdown performance. Advantages and Applications Perfect combination of mechanical and biological cleaning. Flexible installation in pump version, ideal for pond owners with pump systems. Reduced maintenance through the innovative dirt gutter system. Why Fiap BioSieve Active 50000 Pump Version? The BioSieve Active 50000 is the ideal choice for pond owners seeking a high-quality and comprehensive filtration solution. It combines easy installation, robust construction, and thoughtful technology for sustainable care of your koi pond or swimming pond. Ensure clear water and a healthy pond environment with this state-of-the-art pond pre-filter system!

Fiap Spalt Active 12000 Gravity Pond Pre-Filter: Efficient and Robust for Optimal Water Treatment The Fiap Spalt Active 12000 Gravity Pond Pre-Filter is the ideal solution for pond owners who rely on efficient and low-maintenance water treatment. With its large-area high-performance slot sieve, the system reliably removes dirt particles from a size of 300 microns, significantly relieving the subsequent biological filter media and creating perfect conditions for sustainable pond water treatment. High-Quality Construction and Innovative Technology Thanks to its robust stainless steel construction, the Fiap Spalt Active 12000 Gravity Pond Pre-Filter offers long-term reliability. The Fiap SpaltSieb Active not only provides mechanical filtration but also supplies oxygen enrichment that promotes the ecological balance in the pond. Technical Highlights and Extensions Maximum Flow Rate: Efficient processing of up to 12,000 liters per hour. Connections: Inlet: DN 100 for easy integration into pond systems. Outlet: DN 100 for reliable water drainage. Dirt Outlet: DN 100 for effortless disposal of debris. Coarse Dirt Separation: High-performance slot sieve for particles larger than 0.3 mm. Dimensions: Compact size of 625 mm x 250 mm x 850 mm, weight 29 kg, ideal for space-saving installations. Durable and Long-Lasting: Premium stainless steel with a 5-year warranty. Advantages and Applications Efficient Water Cleaning: Relieves biological pond filter media for sustainable pond care. Environmentally Friendly: Energy- and water-saving technology for cost-conscious pond owners. Easy Installation and Maintenance: Gravity version for effortless operation. Why Fiap Spalt Active 12000? With its thoughtful design, high performance, and innovative technology, the Fiap Spalt Active 12000 Gravity Pond Pre-Filter is an essential element for the care of your pond. Invest in an advanced filtration system that not only ensures clear water conditions but also supports the well-being of your pond inhabitants!

Fiap Spalt Active 22000 Gravity Pond Pre-Filter: Efficient Coarse Dirt Filtration for Ponds The Fiap Spalt Active 22000 Gravity Pond Pre-Filter is a powerful mechanical filter that efficiently removes coarse solids from pond water, starting from a size of 300 microns, using a large-surface high-performance slot sieve. Thanks to its low-maintenance and energy-saving design, cleaning your water circulation becomes a breeze. The filter significantly relieves subsequent biological filter media, enabling highly effective pond water treatment. High-Quality Technology and Versatile Functionality This filtration system offers premium quality made of stainless steel and integrates innovative oxygen enrichment through the Fiap SpaltSieb Active. This combination makes the pre-filter perfect for use with the Fiap Module Active Filtration System and ensures sustainable improvement of water quality. Technical Data and Extensions Maximum Flow Rate: Up to 22,000 liters per hour, ideal for medium-sized ponds. Connections: Inlet and outlet each DN 150, dirt outlet DN 100 for effective water drainage. Coarse Dirt Separation: High-performance slot sieve with a mesh size of 300 microns to remove particles larger than 0.3 mm. Dimensions: Compact size of 625 mm x 500 mm x 850 mm, optimized for flexible installation. Durable and Long-Lasting: Made of high-quality stainless steel, weighing 42,000 grams, with a 5-year warranty. Applications and Advantages The Fiap Spalt Active 22000 Gravity Pond Pre-Filter is ideal for pond owners looking for reliable mechanical water treatment. The system is designed for easy installation and maintenance, delivering excellent results in combination with the Fiap Module Active Filtration System. It also saves energy and water – a plus for the environment and cost savings. Why Fiap Spalt Active 22000? With its innovative technology, robust construction, and versatile applications, the Fiap Spalt Active 22000 is the perfect choice for efficient and sustainable pond care. Create optimal conditions for clear water and a healthy pond environment with this high-performance pre-filter!

Fiap Spalt Active 8000 Gravity Pond Pre-Filter: Effective Coarse Dirt Filtration for Pond Systems The Fiap Spalt Active 8000 Gravity Pond Pre-Filter offers a reliable solution for the mechanical removal of dirt particles from your pond water. The filtration system is equipped with a large-area high-performance slot sieve that efficiently filters out solids from a size of 300 microns. This significantly relieves the subsequent biological pond filter media, enabling highly effective biological pond water treatment. Premium Technology and Easy Application This pre-filter combines low-maintenance functionality with high-quality technology. The Fiap SpaltSieb Active not only ensures coarse dirt separation but also provides oxygen enrichment for the pond water. Its robust stainless steel construction guarantees long-term reliability and top-quality performance. Technical Details and Extensions Maximum Flow Rate: Up to 8,000 liters per hour, ideal for small to medium-sized pond systems. Connections: Inlet and outlet both DN 100, dirt outlet DN 50 for flexible installation options. Coarse Dirt Separation: High-performance slot sieve for particles larger than 0.3 mm. Dimensions: Space-saving design with a size of 400 x 500 x 550 mm and a weight of 25.2 kg. Durable and Long-Lasting: High-quality stainless steel construction with a 5-year warranty. Advantages and Applications Efficient Water Cleaning: Perfect for combination with the Fiap Module Active Filtration System. Environmentally Friendly: Energy-efficient and water-efficient, ideal for sustainable pond care. Easy Installation: Gravity version with integrated dirt drain for effortless operation and maintenance. Why Fiap Spalt Active 8000? The Fiap Spalt Active 8000 Gravity Pond Pre-Filter provides a top-class solution for mechanical water treatment and significantly improves pond water quality. With its thoughtful design, high performance, and low maintenance, it is an indispensable element for your pond system. Invest in sustainable care and clear pond conditions with this efficient pre-filter system!

Fiap Spalt Active 12000 Pond Pre-Filter Pump Version: Efficient Pre-Filter for Clear Water Quality The Fiap Spalt Active 12000 Pond Pre-Filter Pump Version is an advanced mechanical coarse dirt filter that efficiently removes dirt particles starting from 300 microns using a large-area high-performance slot sieve. It significantly relieves the subsequent biological pond filter media and enables particularly effective water treatment, both for small and medium-sized pond systems. The combination with the Fiap Module Active Filtration System maximizes water quality in your pond system. Powerful Technology and Robust Construction This pre-filter impresses with its innovative Fiap SpaltSieb Active, which also supports oxygen enrichment of the water. With its robust stainless steel construction, the Fiap Spalt Active 12000 provides both durability and reliability. The pumped version allows for flexible installation and provides low-maintenance use. Technical Details and Highlights Maximum Flow Rate: Up to 12,000 liters per hour, ideal for efficiently cleaning medium-sized ponds. Connections: Inlet: DN 100 for easy integration into pump systems. Outlet: DN 100 for optimal water drainage. Dirt Outlet: DN 100 for effortless disposal of dirt particles. Coarse Dirt Separation: High-performance slot sieve for particles larger than 0.3 mm. Dimensions: Compact size of 625 mm x 250 mm x 850 mm and weight of 29 kg, ideal for space-saving installation. Durable and Long-Lasting: Premium stainless steel construction with a 5-year warranty. Advantages and Applications Efficient Water Treatment: Perfect for ponds up to 12,000 liters of flow per hour. Energy-Efficient: Optimized system for low resource consumption. Easy Installation and Maintenance: The pumped version is flexible and user-friendly. Why Fiap Spalt Active 12000 Pump Version? The Fiap Spalt Active 12000 Pond Pre-Filter Pump Version provides an excellent solution for pond water care. With its powerful coarse dirt removal, low-maintenance design, and high-quality materials, it is the ideal choice for pond owners who value efficiency and quality. Invest in this reliable filtration system for crystal-clear water and a healthy pond environment!

Fiap Spalt Active 22000 Pond Pre-Filter Pump Version – High-Performance Pre-Filter for Pond Systems The Fiap Spalt Active 22000 Pond Pre-Filter is a mechanical coarse dirt filter that impresses with a large-area high-performance slot sieve. Solids starting from a size of 300 microns are effectively removed from the water circulation, significantly relieving the biological pond filter media and ensuring efficient water treatment. This model is ideally suited as an addition to the Fiap Module Active Filtration System and offers premium quality stainless steel for maximum durability. Features and Benefits Mechanical Water Treatment: Reliably removes dirt particles and ensures clear pond water. Oxygen Enrichment: The slot sieve improves oxygen supply and supports the health of your pond inhabitants. Energy-Saving Solution: Minimizes water and energy consumption thanks to efficient design. Easy Maintenance: The integrated dirt drain and optimized filtration system simplify care. Flexible Application: Ideal for larger pond systems with a maximum flow rate of 22,000 liters per hour. High-Quality Craftsmanship: Robust stainless steel housing for long-lasting functionality. Technical Specifications Flow Capacity: Maximum 22,000 liters per hour. Connections: Inlet DN 150, Outlet DN 150, Dirt Outlet DN 100. Coarse Dirt Separation: Particle size from 300 microns. Dimensions: Compact size of 625 x 500 x 850 mm. Weight: Stable construction with 42 kg. Filter Sieve Element: A powerful element for maximum efficiency. Warranty: 5 years, a sign of reliable quality. Extensions and Compatibility The Fiap Spalt Active 22000 Pond Pre-Filter can be seamlessly integrated into the Fiap Module Active Filtration System, optimizing water treatment. Thanks to the pumped version, installation is straightforward, and the integrated dirt drain makes maintenance incredibly easy. This pre-filter offers an energy-saving and high-performance solution for mechanical water treatment in pond systems. Invest in premium quality that keeps your pond clean and healthy for the long term.

Fiap Spalt Active 8000 Pond Pre-Filter Pump Version: Efficient Filtration System for Clear Pond Conditions The Fiap Spalt Active 8000 Pond Pre-Filter Pump Version is a mechanical coarse dirt filter that efficiently removes solids from a size of 300 microns using a large-area high-performance slot sieve. This filtration system offers a low-maintenance and energy-efficient solution for cleaning pond water and significantly relieves subsequent biological filter media, enabling particularly effective pond water treatment. Premium Technology and Robust Construction In addition to coarse dirt separation, the pre-filter also provides oxygen enrichment of the pond water, which promotes the ecological balance. With its high-quality stainless steel housing, the Fiap Spalt Active 8000 Pump Version ensures durability and reliability. It is the perfect complement to the Fiap Module Active Filtration System to achieve optimal water quality. Technical Details and Practical Extensions Maximum Flow Rate: Up to 8,000 liters per hour, ideal for small to medium-sized pond systems. Connections: Inlet: DN 100 for flexible pump systems. Outlet: DN 100 for optimal water drainage. Dirt Outlet: DN 50 for easy disposal. Coarse Dirt Separation: High-performance slot sieve for particles larger than 0.3 mm. Dimensions: Compact size of 400 x 500 x 550 mm, weight 25.2 kg, for easy placement and handling. Setup: Pumped version for flexible installation options. Durable and Long-Lasting: Premium stainless steel with a 5-year warranty. Advantages and Applications Efficient Water Treatment: Relieves biological filter media for sustainable pond care. Energy-Efficient: Optimized technology for reduced resource consumption. Easy Installation and Maintenance: Ideal for pond owners who value user-friendliness. Why Fiap Spalt Active 8000 Pump Version? The Fiap Spalt Active 8000 Pump Version is a top-tier solution for efficient mechanical water treatment. With its modern technology and thoughtful construction, this filtration system ensures crystal-clear water and a healthy environment for your pond inhabitants. Invest in quality and performance for optimal pond care!

Smartsieve Sieve Bow Filter Gravity Pre-Filter: Affordable and Efficient for Clear Koi Ponds The Smartsieve Sieve Bow Filter Gravity Pre-Filter from Aquaforte offers a cost-effective yet powerful solution for efficiently removing coarse debris from pond water. With its robust 300-micron stainless steel sieve element and flexible connection options, it stands out for reliability and ease of use – ideal for koi ponds with a volume of up to 25,000 liters. Robust Construction and Excellent Performance Made from durable polyethylene (PE), the Smartsieve pre-filter combines longevity with an affordable price-performance ratio. The generously sized sieve element of 71.5 cm x 40 cm ensures precise filtration and sustainable improvement of water quality in your pond system. Technical Highlights and Practical Accessories Dimensions: Compact size of 67 cm x 36 cm x 101 cm, perfect for a variety of installations. Maximum Flow Rate: High performance with up to 25,000 liters per hour for efficient filtration. Connections: Two 110 mm inlets and a flexible 90/63 mm outlet to fit your requirements. Dirt Drain: Includes 63 mm flexible sleeve and slide valve for convenient disposal of dirt particles. Accessories: Supplied complete with lid, flexible 110 mm sleeve, flexible 110 mm end cap, and a 90/63 mm reducing sleeve. Versatile Applications and Easy Installation The Smartsieve Sieve Bow Filter Gravity Pre-Filter can be easily used in various pond configurations. Its well-thought-out design and extensive connection options make it an ideal choice for pond owners who value efficient filtration technology. Why Smartsieve? With its proven technology and affordable cost, the Smartsieve pre-filter is an excellent investment in the care of your koi pond. Secure a reliable solution for crystal-clear pond water and create the perfect environment for your koi fish!

SuperSieve Sieve Bow Filter Pre-Filter Pump Version: The Flexible Filtration Solution for Koi Ponds The SuperSieve Sieve Bow Filter Pre-Filter Pump Version is a versatile and powerful pre-filter designed for koi ponds with a volume of up to 22,000 liters. With an extra-large stainless steel sieve element and flexible connection options, it is ideal for removing coarse debris and ensures clear, healthy water in your pond system. Robust Construction and Efficient Performance This filtration system features a high-quality 300-micron stainless steel sieve element with a generous sieve size of 32 cm x 46 cm, comparable to large sieve filters. Made from durable polyethylene (PE), the filter offers a sturdy construction and is designed for a maximum flow capacity of 22 m³/h. The integrated lid protects the filter components and reduces maintenance. Technical Details and Flexibility Dimensions: Compact size of 540 mm x 400 mm x 600 mm allows flexible installation. Weight: Lightweight housing with a weight of 9 kg for easy handling. Connections: Versatile inlet options with 2 x 63 mm flexible sleeves and one 75/110 mm outlet connection. Overflow Protection: Integrated overflow protection with 2 x 75 mm sleeves, providing additional safety in the filtration system. Dirt Drain: Convenient 63 mm dirt drain with flexible sleeve for efficient cleaning. Flexible Use in Various Pond Configurations The SuperSieve Sieve Bow Filter Pre-Filter Pump Version is suitable for a wide range of applications: Pre-filter: Installed directly at the koi pond, in front of a waterfall or multi-chamber filter. Dirt filter: After pond skimmers or sludge vacuums to return clean water. Delivery includes a flexible accessory package with sleeves, a universal hose tail, and a lid, making the filter ready for immediate use. Thanks to the pre-formed connection stubs that can be individually cut, it adapts perfectly to your specific needs. Why SuperSieve? With its thoughtful design and versatility, the SuperSieve Sieve Bow Filter is the perfect choice for koi pond enthusiasts looking for a cost-efficient and flexible solution. Optimize your pond water quality and make the SuperSieve Sieve Bow Filter Pre-Filter Pump Version an essential part of your pond maintenance!

Ultra Sieve III Sieve Bow Filter Gravity Pre-Filter: Maximum Performance for Professional Koi Ponds The Ultra Sieve III Sieve Bow Filter Gravity Pre-Filter is the ideal choice for koi pond owners who demand maximum efficiency and reliability. This advanced filtration system effectively removes coarse debris from pond water and optimizes water quality – a perfect combination with a bead filter. The high-quality 300-micron stainless steel sieve element measuring 34.5 cm x 45 cm ensures precise filtration results that meet the highest standards. Robust Construction and High-Performance Technology Made from extremely durable polypropylene, the Ultra Sieve III impresses with its solid construction that withstands even the most demanding conditions. The filter is designed for a maximum flow rate of up to 30,000 liters per hour, ideal for koi ponds with a volume of up to 40,000 liters. Technical Highlights and Extensions Dimensions: Practical size of 65 cm x 37 cm x 100 cm offers flexibility during installation. Inlets and Outlets: Three 110 mm inlets and one 2" male threaded outlet allow for versatile integration into existing systems. Dirt Drain: Equipped with a 90/110 mm slide valve for easy cleaning. Accessories: Includes 2 threaded sleeves (63 mm x 2") for convenient adaptation to individual installation requirements. Advantages and Areas of Application The Ultra Sieve III is suitable for various applications thanks to its high performance and flexible connections: Pre-filter in combination with a bead filter to enhance water quality. Suitable for large koi ponds where efficient particle filtration is essential. Why Ultra Sieve III? With its robust construction, versatile connection options, and impressive filtration performance, the Ultra Sieve III Sieve Bow Filter Gravity Pre-Filter is an essential component for every professional or hobby koi pond. Invest in clear, healthy pond conditions – for your fish and a harmonious pond experience!

Ultra Sieve Low Sieve Bow Filter Gravity Pre-Filter: The Professional for Clear Koi Ponds The Ultra Sieve Low Sieve Bow Filter Gravity Pre-Filter is the ideal solution for professional koi ponds to efficiently remove coarse and fine dirt particles. Thanks to its extra high-positioned inlet, this filtration system offers maximum flexibility and is perfectly suited for combination with a bead filter. It is designed for durability, reliability, and efficiency in use. High-Quality Materials and Thoughtful Design The filter is made entirely of durable polypropylene, making it extremely resistant. The integrated 300-micron stainless steel sieve element with generous dimensions of 34.5 cm x 45 cm removes even the finest particles, ensuring crystal-clear water. Technical Highlights at a Glance Filter Size: Compact dimensions of 64 cm x 37 cm x 75 cm for easy installation and handling. Maximum Flow Rate: Powerful performance with a flow of up to 25,000 liters per hour. Connections: Two 110 mm inlets and one 90 mm outlet, optimized for a wide range of requirements. Dirt Drain: Practical dirt drain with 90/110 mm including slide valve for convenient emptying. Accessories: Flexible reducing sleeve 90/63 mm for individual adjustments. Perfect for Koi Ponds up to 25,000 Liters The Ultra Sieve Low Sieve Bow Filter is specifically designed for koi ponds with a volume of up to 25,000 liters. Thanks to its efficient performance and robust construction, it meets the demands of both hobbyists and professionals. With its proven technology, it offers a sustainable solution for optimal water quality. Choose the Ultra Sieve Low Sieve Bow Filter Gravity Pre-Filter and optimize water care in your koi pond – for healthy fish and a clear, attractive pond experience!

Ultra Sieve Low-L Sieve Bow Filter Gravity Pre-Filter: High Performance for Professional Koi Ponds The Ultra Sieve Low-L Sieve Bow Filter Gravity Pre-Filter is the perfect solution for professional koi ponds. This powerful filtration system effectively removes both coarse and fine dirt particles from pond water, ensuring optimal water quality. With an extra high-positioned inlet, the model is ideal for combination with a bead filter. Robust Construction and Premium Technology Made of indestructible polypropylene and equipped with a 300-micron stainless steel sieve element, the Ultra Sieve Low-L filter offers exceptional durability. It is designed for high flow rates of up to 35,000 liters per hour, making it efficient even for larger koi ponds. Extended Technical Data and Features Size: Compact dimensions of 64 cm x 53 cm x 75 cm allow for flexible placement. Connections: Three inlets of 110 mm and one outlet of 90 mm, perfect for various installation requirements. Dirt Drain: Includes practical 90 mm slide valve and 63 x 2" threaded socket. Accessories: Flexible reducing socket 90/63 mm included for individual adjustments. Optimal Performance for Koi Ponds up to 35,000 Liters With its high flow capacity and versatile connection options, the Ultra Sieve Low-L Sieve Bow Filter Gravity Pre-Filter is ideal for koi ponds up to a volume of 35,000 liters. The filtration system impresses with easy handling, robust materials, and reliable functionality that meets both professional demands and those of hobby koi pond owners. Maximize the efficiency of your koi pond with the Ultra Sieve Low-L Sieve Bow Filter Gravity Pre-Filter – your solution for clear and healthy pond water!