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A well-functioning pond system starts with knowledge and proper maintenance. At DVS Filtertechniek, we are happy to help you with clear answers to practical and technical questions. Whether it concerns choosing the right filter, maintaining pumps, or understanding how UV systems work, you will find explanations and tips here to help keep your pond clear, healthy, and trouble-free.
About DVS Filtertechniek
What exactly does DVS Filtertechniek do?
• DVS Filtertechniek designs and manufactures high-quality filtration systems for koi ponds, entirely in-house.
• All products are handmade and welded in the Netherlands using modern equipment.
• The product range includes drum filters, combi filters, bio chambers, and accessories.
• All products are handmade and welded in the Netherlands using modern equipment.
• The product range includes drum filters, combi filters, bio chambers, and accessories.
For what type of ponds are DVS Filtertechniek’s products suitable?
• For koi ponds ranging from small to large sizes.
• For ponds with a high fish load and ponds where optimal water clarity is desired.
• For both new ponds and existing installations.
• For ponds with a high fish load and ponds where optimal water clarity is desired.
• For both new ponds and existing installations.
Does DVS also provide custom solutions for specific pond installations?
• Yes, DVS provides custom-made solutions tailored to the customer’s requirements.
• The connections and layout of the filters can be customized as desired.
• The connections and layout of the filters can be customized as desired.
Where can I purchase DVS Filtertechniek products?
• Through authorized dealers in the Netherlands and abroad.
• Through installers who work with DVS products.
• DVS can help you find a suitable point of sale.
• Through installers who work with DVS products.
• DVS can help you find a suitable point of sale.
Does DVS also provide technical advice or assistance with installation?
• Yes, DVS supports customers and dealers with technical information, installation advice, and system design.
• For complex projects, DVS collaborates on sizing and component selection.
• For complex projects, DVS collaborates on sizing and component selection.
Product range
What is the difference between a drum filter, combi filter, and bio chamber? How do I choose the right filtration system?
• A drum filter automatically removes debris using a rotating screen.
• A combi filter combines a drum filter with biological filtration in a single housing.
• A bio chamber is a biological filtration unit placed after a mechanical pre-filter.
• The choice depends on the pond volume and fish load.
• A combi filter combines a drum filter with biological filtration in a single housing.
• A bio chamber is a biological filtration unit placed after a mechanical pre-filter.
• The choice depends on the pond volume and fish load.
How often does a drum filter need to be cleaned?
• A drum filter cleans itself automatically; manual cleaning is usually limited to periodic inspections.
• Spray nozzles and screen panels should be checked regularly and cleaned if necessary.
• Spray nozzles and screen panels should be checked regularly and cleaned if necessary.
Can I expand or upgrade my existing filtration system?
• Yes, DVS filters can in most cases be integrated into existing pond installations.
• It is possible to upgrade to a drum filter or combi filter without replacing the entire system.
• It is possible to upgrade to a drum filter or combi filter without replacing the entire system.
What is the advantage of a trickle filter compared to a bio chamber?
• A trickle filter provides maximum oxygen exchange, making biological breakdown highly efficient.
• A bio chamber offers greater water volume and is easy to integrate into existing filtration lines.
• A bio chamber offers greater water volume and is easy to integrate into existing filtration lines.
Which pond pump is suitable for my filtration system?
• The pump must match the flow rate required by the filtration system.
• DVS recommends energy-efficient pumps that are suitable for continuous operation and require minimal maintenance.
• DVS recommends energy-efficient pumps that are suitable for continuous operation and require minimal maintenance.
What does a rinse pump do and when do I need one?
• A rinse pump supplies high-pressure water for automatically cleaning the screen in a drum filter.
• It is required for filters with an automatic rinsing function.
• It is required for filters with an automatic rinsing function.
What is the function of a UV lamp in a filtration system?
• A UV lamp prevents suspended algae and pathogens by irradiating microorganisms.
• This promotes clear water and reduces the biological load on the filtration system.
• This promotes clear water and reduces the biological load on the filtration system.
When should I replace a UV lamp?
• UV lamps lose their effective light output after approximately 8,000–9,000 operating hours.
• Recommendation: replace the lamp once a year, preferably in spring.
• Recommendation: replace the lamp once a year, preferably in spring.
Maintenance
Weekly maintenance
• Rinse gutter
Check: Is the dirty water drain unobstructed?
Action: Visually inspect and manually remove any accumulated debris if necessary.
• Spray nozzles
Check: Are there any visible blockages (dirty streaks on the screen)?
Action: Loosen the swivel fitting and clean the spray nozzle.
Check: Is the dirty water drain unobstructed?
Action: Visually inspect and manually remove any accumulated debris if necessary.
• Spray nozzles
Check: Are there any visible blockages (dirty streaks on the screen)?
Action: Loosen the swivel fitting and clean the spray nozzle.
Monthly maintenance
• Screen panels
Check: Are there any holes or tears in the screen?
Action: Visually inspect and replace any damaged elements.
• Emergency covers partition wall for drum
Check: Are the plastic covers intact?
Action: Replace if damaged:
Art. 900.4081 (not UV-resistant)
Art. 900.4082 (UV-resistant)
Check: Are there any holes or tears in the screen?
Action: Visually inspect and replace any damaged elements.
• Emergency covers partition wall for drum
Check: Are the plastic covers intact?
Action: Replace if damaged:
Art. 900.4081 (not UV-resistant)
Art. 900.4082 (UV-resistant)
Annual maintenance
• Drum seal
Check: Is the silicone rubber still flexible?
Action: If not flexible → replace with the correct seal:
Art. 400.2000 drum ECO/22/35
Art. 400.2001 drum 50/65/100N/140N
Art. 400.2002 drum PP100
Art. 400.2003 drum ENTRY
Art. 400.2900 drum 22/35 up to model year 2018
Art. 400.2901 drum 50/65 up to model year 2018
Check: Is the silicone rubber still flexible?
Action: If not flexible → replace with the correct seal:
Art. 400.2000 drum ECO/22/35
Art. 400.2001 drum 50/65/100N/140N
Art. 400.2002 drum PP100
Art. 400.2003 drum ENTRY
Art. 400.2900 drum 22/35 up to model year 2018
Art. 400.2901 drum 50/65 up to model year 2018
Troubleshooting
Why does my filter rinse too frequently?
Possible causes and solutions:
• Screen clogged: Clean the screen with citric acid; for stubborn deposits, use screencleaner
• Flow too high: Reduce the output of the pond pump(s).
• Sensor position incorrect: Check the sensor position.
• Screen clogged: Clean the screen with citric acid; for stubborn deposits, use screencleaner
• Flow too high: Reduce the output of the pond pump(s).
• Sensor position incorrect: Check the sensor position.
Why is my filter no longer rinsing automatically?
Possible causes and solutions:
• Water level too low: Top up the pond.
• Screen clogged: Clean the screen with citric acid.
• Water level too low: Top up the pond.
• Screen clogged: Clean the screen with citric acid.
Why does the drum not rotate during rinsing?
Possible causes and solutions:
• Motor defective: Test at 220V.
• Motor overheated: Allow to cool down for 60 minutes.
• Fuse defective: Replace the fuse (2A).
• Motor defective: Test at 220V.
• Motor overheated: Allow to cool down for 60 minutes.
• Fuse defective: Replace the fuse (2A).
Why does my drum keep rotating?
Possible cause and solution:
• Plug connected incorrectly: Use “MOTOR DRUM FILTER”.
• Plug connected incorrectly: Use “MOTOR DRUM FILTER”.
Why is the rinse pump not working?
Possible causes and solutions:
• Rinse pump defective: Test at 220V.
• Fuse defective: Replace the fuse (6A).
• Rinse pump defective: Test at 220V.
• Fuse defective: Replace the fuse (6A).
Why does the rinse pump keep running?
Possible cause and solution:
• Plug connected incorrectly: Use “CLEANING PUMP”.
• Plug connected incorrectly: Use “CLEANING PUMP”.
Why is the circulation pump not working?
Possible causes and solutions:
• Sensor plug not connected: Plug it in.
• Fuse defective: Replace the fuse (8A).
• Sensor plug not connected: Plug it in.
• Fuse defective: Replace the fuse (8A).
If your question is not listed or you need advice, we are happy to help.
ContactWe are happy to assist you
Do you have questions or need advice? The team at DVS Filtertechniek is here to help. For purchasing our products, you can find the nearest dealer via our website.