Oase BioPress 4000 Filter Set - 50504

The Oase BioPress Set 4000 provides an optimally matched pump and filter kit for ponds up to 4000 ...

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B&QB&Q - Biopress 4000 Pond Filter Set
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www.pond-planet.co.ukOase Biopress 4000 Filter Set
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Product Information

Full details

The Oase BioPress 4000 is an all-in-one pond filtration solution designed for pond owners who want clear, healthy water without the complexity of building a custom system. This kit is ideal for ponds up to 4000 litres, providing a combination of mechanical and biological filtration alongside integrated UVC technology to manage algae. While it significantly simplifies pond maintenance with its clever cleaning handle and quick-lock lid, users should note that the system requires proper initial placement and consistent pump flow to ensure the maximum efficiency of its biological media.

All features

Model Part Number50504
BrandOase

Extended Product Information

FAQs

Can I use this filter in a pond with Koi?

The BioPress 4000 is suitable for smaller ponds. If you have Koi, you will likely need to significantly reduce the pond volume calculation as Koi produce much more waste than goldfish or plants.

How often should I change the UVC lamp?

The UVC lamp should be replaced once every season (typically in the spring) to ensure the light is strong enough to kill algae.

Is the pump included in the box?

Yes, the kit comes complete with an Oase Filter Pump 1500, hose, and filter media.

Does the unit need to be hidden?

It is designed to be aesthetically pleasing and can be partially buried to blend into the garden, though it functions perfectly well sitting on the surface.

How do I know when the filter is full?

A reduction in the flow rate returned to the pond is the primary indicator that the filter foams have collected enough debris and require cleaning via the handle.

Troubleshooting

Reduced water flow

Use the built-in cleaning handle to rinse the foams and check the pump intake for leaves or debris.

Water remains cloudy

Check if the UVC bulb is functioning. The UVC light usually requires replacement once every season to maintain effectiveness.

Filter lid leaking

Inspect the rubber gasket/O-ring between the lid and container for debris or damage and ensure the quick-lock clamp is fully engaged.

Pros and Cons

Pros

  • All-in-one package includes everything needed for installation
  • Easy maintenance via the external cleaning handle
  • Effective UVC light prevents green water issues
  • Compact and buryable design hides equipment from view
  • Reliable Oase brand build quality

Cons

  • Capacity limited to 4000 litres (smaller for ponds with high fish density)
  • Biological media needs time to establish during the initial season
  • Requires proper winter storage to prevent freezing damage

Setup, Compatibility & Care

  1. Placement: Position the filter on level ground near the pond. You may bury the unit up to the lid to improve garden aesthetics.
  2. Pump Installation: Submerge the included Oase Filter Pump 1500 in the deepest part of the pond to ensure optimal water circulation.
  3. Hose Connection: Attach the provided hose securely to the filter inlet and the pump outlet using the supplied clips.
  4. Starting Up: Ensure all seals are clean and the quick-lock lid is fully tightened before turning on the power.
  5. Seasonal Care: In autumn, remove the unit from the pond, clean the foams thoroughly, and store the filter and pump in a frost-free environment to prevent cracking from ice expansion.
  6. Media Replacement: Check filter foams annually and replace them if they lose their shape or structural integrity.

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