sera crystal clear Professional is the innovative high performance filter medium by sera. The innovative, patented 3D fiber structure of the filter balls very quickly removes even smallest particles above 10 µm (such as floating algae or sludge). The filter medium is suitable for all filter types and can be used in freshwater and marine aquariums as well as in ponds. The product is therefore available in two package sizes:
sera crystal clear Professional for 360 l of water (12 filter balls) • sera pond crystal clear Professional for 6,000 liters of water (350 g)
Unlike common filter wool, the filter balls keep their shape and can be washed out. 20% of the filter balls should be replaced after washing out for a constantly high filter performance. Maximum filter performance can be achieved by combining sera crystal clear Professional with a UV-C lamp and/or coagulants such as sera phosvec·clear.
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All prices are in USD