Biofilter, a biological pond filter

A biofilter is a biological filter that supplies carbonated water to the pond. Carbonic acid is very important for the aquatic plants. They, in turn, keep the pond water clear and clean. Click here to go to our range of Biofilters.

Biofilters from Velda

Velda has a wide range of biofilters, the right one for every pond. For example, we have the Cross Flow Biofill for novice ponds up to 10,000 liters. In addition, a new product in our range: Floating Combi Filter. The Floating Combi Filter is a unique floating pond filter, for small ponds up to 5000 l, that maximizes filtration, while not forming a disturbing element in or around the pond. The Floating Combi Filter comes complete with filter materials and is ready to use. In addition, we also have a great Giant Biofill XL for large ponds in the range. Want to know where to buy these biofilters? Then click on the following link to find a dealer close to you.

How does a biofilter work?

A pond pump pumps the water through the biofilter. This biological filter contains bacteria that convert waste products into carbonic acid. The carbonic acid is pumped back into the pond and then serves as food for the plants in the pond. This is called the biological cycle of the pond.

With new biofilters, it takes several weeks for the bacteria to multiply enough to do their job properly. Fortunately, you can add bacteria to the filter material yourself. This way you make sure your filter works faster. Also, a biofilter needs hard water. By hard water is meant water that contains sufficient minerals. You can take care of this yourself by applying a hardness enhancer. Biofilters are often suitable for ponds from 2,500 to 60,000 liters.

Purchasing a biofilter

When buying a biofilter, make sure you have a good pond pump. This is because the pump must be on continuously from March to at least October. Thus, the biofilter is supplied with water all the time. Because if the biological filter runs dry, the bacteria die and you have to start all over again.

Connecting a biofilter is not difficult. A biological filter must be placed above water and when you purchase a good filter, it always comes with a clear and useful manual. Do you have questions about biofilters? Ask them on our Facebook page and we will answer them as soon as possible. Want to read great articles about pond? Go to our blog page.