GFK filter
The backbone for crystal-clear pond water.
GFK filter — why?
Filter housings made of glass-fibre reinforced plastic (GRP) form the technical heart of durable pond systems. Unlike simple plastics, GRP is virtually indestructible, weather-resistant and retains its value — no technological wear, no spare parts issues.
TRIPOND GFK filters rely on biological stability and physical robustness instead of failure-prone electronics. No sensor, no motor, no control board – and yet the highest filter performance.
TRIPOND Centre-Vortex
The compact all-in-one solution
The Center Vortex is a proven multi-chamber filter system combining maximum cleaning performance in a minimal space. Five cleaning stages using the up-flow principle — water flows through the filter from bottom to top for optimal flow and easy maintenance.
The five purification stages
Vortex chamber
Centrifugal forces effectively separate coarse debris such as leaves and feed residue.
2. Brush chamber
Mechanical fine separation of algae residue and suspended solids.
3. - 5. Biological Zones
Three chambers with high-quality media (e.g. Japanese mats) biologically break down pollutants such as ammonia and nitrite.
Performance & Dimensions
Available in sizes C-20 to C-115:
- Koi ponds — up to 35,000 litres
- Natural ponds — up to 100,000 litres
TRIPOND In-line Filter
Classic multi-chamber filters with spatially distinct separation of mechanical and biological processes — flexible, modular, and scalable for any pond size.
Compact Series
Ideal for small to medium-sized ponds. Multi-stage design with 3 to 5 chambers, can be flexibly combined with a vortex pre-filter. Compact design for confined installation situations.
Jumbo Series
For large pond volumes and high loads, e.g. heavily stocked koi ponds. Same proven technology as the compact series, but with significantly larger chamber dimensions for high water volumes.
Both series: The modular design allows the stocking to be individually adapted to the fish stock.
TRIPOND Module Filter —
Maximum flexibility
The modular system for bespoke filter solutions. Individual GRP modules are combined in varying numbers and sequences, according to your requirements.
Available modules:
- Brush module Mechanical pre-filtration
- Carpet module — main biological stage with Japanese mats
- Bioball module for high biological performance
- Aquarock Module natural filter medium
- Moving Bead Module — for dynamic filter biology
Future-proof: The system can be expanded at any time with additional modules for pond enlargement or increased fish stocking.
Accessories — More power, more comfort
With the right accessories, the efficiency and ease of use of the filter system can be significantly increased:
Vortex wave
Special insert for the Vortex chamber — increases separation efficiency by up to 75% through flow stabilisation.
Drain kits
Connects the dirt outlets of all chambers to a central drain — quick and clean cleaning.
Connection sets
Easy connection of different hose diameters to the 110 mm or 160 mm inlets.
UV-C holder
Stainless steel brackets for space-saving integration of UV technology directly onto the GRP filter.
GFK pump sumps
Professional enclosures for the protected housing of pumps and equipment outside of the pond.
Why GRP multi-chamber filters?
Why fibreglass multi-chamber filters?
Biologically superior
Higher resilience than automated systems — stable biocoenosis, robust Japanese mats, no biological collapse during peak loads.
Absolute
Winterfest
No nozzles, no frost traps — can be operated all year round, even at -15°C.
Noise
the
Gravity-operated with no moving parts – no noise from flushing pumps.
Minimal operating costs
No consumables, no electricity for rinsing cycles, no spare parts for electronics.
Value-stable
GFK does not age technologically – a filter that runs today will run exactly the same in 20 years.
Our products
BioClear Pressure Filter
The BioClear pressure filters are powerful and user-friendly filter systems with integrated UVC technology. While the 10,000 – 20,000 models offer compact solutions for smaller ponds, the XL models 30,000 – 80,000 impress with a large biofilter zone and high-quality filter materials for maximum water quality.
Lid for centre vortex
The lid for the AquaLogistik Center Vortex is a robust GRP cover, which protects the filter system from dirt and weather influences. It is durable and stable.
Lid for Jumbo Series Filter
The lid for the AquaLogistik Jumbo filter protects the filter system from dirt and weather. Made from robust GRP, it offers a durable and stable cover.
Lid for in-line filter
The cover for the AquaLogistik series filter is a robust GRP cover that protects the filter system from dirt and weather influences. It is durable and stable.
Lid for TRIPOND Vortex
Lid for TRIPOND Vortex for covering and protection against contamination.
Flow meter
Precise flow meter for pond and filter systems – durable, easy to install, and available in two sizes.
Filling package for centre vortex
The refill pack for the AquaLogistik Center Vortex contains high-quality filter media for the biological purification of pond water. It supports the breakdown of pollutants and ensures improved water quality.
Infill package for series filter
The refill pack for the AquaLogistik inline filter contains high-quality filter media for the biological purification of pond water. It supports the breakdown of pollutants and ensures improved water quality.
Refill pack Movingbead for Jumbo Filter
The Moving Bead filler pack for the AquaLogistik Jumbo 2-chamber filter contains filter brushes, Helix HXF 14, slide gates, media carriers, and grommets. It combines mechanical and biological filtration for maximum efficiency and easy integration.
Holder for vortex hive
Robust V2A bracket for secure fixation of the pre-filter honeycomb in the vortex. Allows for easy removal and reinsertion for convenient cleaning and maintenance.
Module filter
The TRIPOND Module Filter is a flexible, expandable filter system that grows with the demands of your pond. Thanks to its modular design, easy installation, and scalable filter performance, it offers a cost-effective and sustainable solution for pond maintenance.
Pump and collection chamber
The pump and collection chamber is a flexible and efficient solution for water management in pond systems. It can be used as a gravity version or freestanding, simplifies pond filtration, and offers versatile connection options for optimal water circulation.
Pipe leak tester
High-quality pipe sealing tester for reliable leak testing – with a toggle clamp for easy use.
Pipe plug
High-quality pipe closure for secure sealing of pipelines – flexible in use, durable and available in various sizes.
TRIPOND Centre Vortex Multi-chamber filter
The TRIPOND Center Vortex Multi-Chamber Filter is a powerful and proven multi-chamber filter system for ponds up to 115,000 litres. Thanks to its multi-stage filter technology and robust construction, it ensures clear water and a healthy pond environment.
TRIPOND Jumbo Multi-Chamber Filter
The TRIPOND Jumbo trickle filter is a multi-chamber filter made of GRP for ponds up to 80,000 litres. Identical in design to the TRIPOND trickle filter, but larger. Supplied fully equipped, including filter media, lid and waste outlet. Optionally expandable with a vortex pre-filter.
TRIPOND Multi-chamber filter
The TRIPOND series filter is a multi-chamber GRP filter for ponds up to 30,000 litres. Its compact design allows for space-saving installation. It can be optionally expanded with a vortex pre-filter for extended maintenance intervals.
Vortex for TRIPOND Jumbo row filter
High-performance Jumbo Vortex for effective pre-filtration for large pond systems, without lid.
Vortex for TRIPOND series filters
Vortex for TRIPOND series filters for effective pre-filtration, without lid, with 110mm connections.
Vortex honeycomb
The AL-Vortex comb optimises dirt separation in vortex filters, extends the water path and promotes biological filtration through a large settlement area for microorganisms. It is lightweight, easy to clean and low-maintenance.
Consultation & Interpretation
Would you like to know which system is the right one for your pond? We will plan it together with you — pond volume, fish stocking, installation situation.
Mon – Thu 8:00 AM – 5:00 PM · Fri 8:00 AM – 2:00 PM
