A range of compact, "hide in the ground", efficient and easy
to clean filters. All models work mechanically and biologically
and the higher grade units incorporate a built-in UV Clarifier
for a Clearwater Guarantee.
There is a de-sludging facility on the Bioforce 2200 & 4500 models.
It is a closed pressure system small enough to hide near the pond
when buried up to its lid. Being pressurised, water can be pumped
through the Bioforce to the top of a waterfall.

Use Bioforce 1100 or 1100uvc for ponds up to 1150 l. /250 gals
Use Bioforce 2200 or 2200uvc for ponds up to 2300 l. /500 gals
Use Bioforce 4500 or 4500uvc for ponds up to 4500 l. /1000 gals

Bioforce 9000 or 9000 UVC

Treats 9000 ltr (2000 gals) ponds, and the 9000UVC model has an integral 11w uvc tube.
This is a large filter containing 3 layers of graded foam and a layer of plastic biological material. When the filter becomes blocked, water will bypass the foams, but still pass the UV light (on the 9000 UVC model), and a red button pops up as an indicator.