Bio Filter BWF series The bio filter, combined with German advanced technology, R&D and made in China.It is a very low maintenance filter using sponge and crystal bio to remove the waste and tiny particles in the water.
Bio Filter Features -New generation sponge filter -Combination of Vortex and Sponge Filter -Patented,patent no. ZL 2013 2 0689558.6 -Lowest maintenance, because of Vortex-Effect -Nitrification and De-Nitrification in one filter -Prevent algae growing in the pond, because of lowest Nitrat -Use in pump- and gravity-mode possible -Long life time 15-20 years