Oase Pond filter 4000 Pond filter Set
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• For 100–1,250 L
• UV-C power: 7 watts
• Maximum flow rate: 1,500 liters/hour
199,99
Price includes VAT, excludingshipping costs
- Shipped the next business day, Shipped choose your own delivery date
Others bought this for their pond
Simons Pond Advice
• Get a €20 gift after purchase
• Choose your language: NL, DE, FR EN
• From installation to maintenance
Ceratophyllum
• Floating oxygenating plant
• Requirements: at least 20 cm of water
• Placement: loose in the water
Large Water lilies
• 3-color Water lilies a basket
• Red, white, and pink
• Depth: 10 to 100 cm
Clear pond water without a pump or filter?
Simon's advice
Current product
Suggestion
Oase Pond filter 4000 Pond filter Set
• For 100–1,250 L
• UV-C power: 7 watts
• Maximum flow rate: 1,500 liters/hour
- Description
Description
Clear water is all about choosing the right plants
A well-maintained pond stays clear and healthy on its own, without the need for equipment or chemicals.
About this product
With the Oase Biopress 4000, you can effortlessly achieve crystal-clear water in your pond. This compact filter set is ideal for ponds up to 4,000 liters and offers a powerful flow rate of 1,500 liters per hour. Thanks to the built-in 7-watt UV-C lamp, algae and pathogens are effectively eliminated. Plus, the built-in cleaning mechanism makes maintenance quick and easy. This way, you can always enjoy a healthy, crystal-clear pond without any hassle.
What makes this product special
What makes the Oase Biopress 4000 unique is its highly efficient triple filtration system. Three different filter mats capture both large and fine debris and promote the optimal growth of beneficial bacteria. This results in clean water and a stable pond environment. Thanks to its smart design, cleaning and replacing the filter mats is a breeze.
Quality and origin
The biological filtration system in the Biopress 4000 is another key feature. The large filter surface area provides ample space for beneficial microorganisms, which is crucial for a healthy and stable pond. This not only ensures clear water but also promotes an optimal biological balance, which is essential for the long term.
Practical Information
The UV-C lamp in the Oase Biopress 4000 provides an extra layer of protection. It effectively eliminates floating algae and harmful pathogens, keeping the water clear. It is recommended that you replace the UV lamp annually for optimal performance.
Here's what our customers have to say!
Excellent
817 reviews on ![]()

The water is finally clear
Purchased: Native Pond Kit 1,500–3,000 L
No matter what I tried, the water in my pond just wouldn't clear up. After exchanging a few emails, I decided to order this complete kit, though to be honest, I wasn't very confident it would work.
The delivery was in good condition and the plants looked healthy. Not much changed during the first few weeks, but after about a month, the water slowly began to clear up.
Now the pond is really in perfect balance. The plants are growing well, and I can even see frogs among the leaves again. I'm really glad I gave this a try.

Plants are growing much better now, and the water is crystal clear
Purchased: STEP ONE Pond substrate
Last year, I had a landscaper install a plant filter in my swimming pond, and he recommended lava rock and some plants from the local garden center. Unfortunately, it all went wrong; the plants died one by one, and I ended up with an algae infestation.
After contacting vdvelde, I was advised to replace the lava rock with Pond substrate to order some additional plants. Now, a few months later, the plants are growing well, and my filter is finally free of algae.

My little city pond
Purchased: Pond Kit Red 100-400L
I’d been dreaming of having a small pond in my city garden for a while, but it always seemed like such a hassle. I found a complete kit online and decided to take a chance, even though I was skeptical about the quality of plants sent by mail. But to my surprise, everything arrived neatly and securely packaged. In no time at all, I had set up my little pond. To my delight, I saw the first water lily bloom after just two months, and as the icing on the cake, I discovered salamanders in my pond. No idea how they got there, but it just makes it even more fun. Truly a joy!

A must-have for anyone with a pond (big or small)
Purchased: Simons Pond Advice
This book has completely met my expectations. It’s a fantastic guide full of great tips on pond construction, pond plants, and design.
I highly recommend buying this.
Great book!

Blue lily: beautiful!
Purchased: Blue Water Lily
Thank you very much for the generous shipment of the marsh irisIris blue”.
The new plants have been planted, and I'm curious to see if they'll bloom this year.
There’s good news about theBlue queenwater lily: It blooms in blue here too—and it’s absolutely stunning!

Removing floor debris without a vacuum cleaner
Purchased: POND CARE Maintenance Kit
After years of accumulation caused by fish, a significant amount of silt had built up in my pond.
At first, I was thinking about getting a pond vacuum, but after talking to customer service, I decided to go with the bottom debris removal kit. I was skeptical, especially since the water got cloudy during the first week. But after a month, the sludge has decreased significantly. No hassle with a vacuum, and a great result!
I’m a fan.

Water lilies greater biodiversity
Purchased: Native Water Lily Field XL
As plant lovers, we were looking for a sustainable addition to our project. The Water lilies vdvelde turned out to be just what we were looking for. Planting the lilies was also a lot of fun. We had requested different varieties, and that wasn’t a problem at all. The delivery was handled professionally, and everything looked great. Within a week, we already saw leaves emerging above the water, and now several flowers are blooming.
Both we and our client are extremely pleased with the result.

Oxygen-producing plants save my fish
Purchased: Oxygenating Plants Package 1,500–3,000 L
My fish were gasping for air, so I looked for an air pump. Then I read that oxygenating plants could solve this problem too. I ordered the package that fits my pond, and now my fish are swimming around carefree again. An added bonus: my pond water is much clearer. Happy fish, happy me!

I'm really happy with my little pond
Purchased: Pond Kit Red 25-90L
This handy kit helped me set up my mini pond in no time. It comes with everything you need!
The service and advice were excellent—much better than at the garden center, where nobody really knows anything.

From maintenance to an organic swimming pond
Purchased: Plant Filter Package 8–12 m²
I was tired of constantly cleaning the pump, so I decided to convert my pond into a natural swimming pond. With the plant filter kit from vdvelde.com, it turned out perfectly! Now I enjoy a beautiful, natural filter and lovely swimming water.
























