The Ubbink Filtrapure is an ideal gravity filter for ponds requiring a filtered flow rate of up to 3000 L/H. It uses both biological and mechanical filtration to remove sediment, organic material and toxicity from your pond.
Ponds can be effected by various factors such as unconsumed fish food, decomposing vegetation and fish waste. If these pollutants are allowed to accumulate, in time they will become harmful to your fish. The use of a biological filter will remove these toxins (nitrate, ammonia) and provide good quality water with the additional benefit of reducing algae growth.
There are two types of filtration action in every bio-filter.
First is mechanical filtration:
At the top of each filter is a foam, these foam physically strain the water removing particles of fish waste and debris from the water.
The second type of filtration is biological:
Below the foam set are bio-media called Flow cor (or Bio balls). The purpose of this media is to allow helpful bacteria to grow on it's surface. The bacteria absorbs the pollutants within the pond water and neutralize ammonia and nitrite deposits then recycles the pollutants to nitrate which is a natural plant food.
Any pond without a waterfall or if with a waterfall has a place at the top to hide the box.
What we liked:
Great value for money. It has many of the features of more expensive filters including a high outlet so half the filter can be buried if needed.
Less than ideal:
No in-built UVC. Can be used with an external UVC if your pond requires one, but not all do.