Sera Pond Crystal Clear Professional
Sera offers Sera Pond Crystal Clear Professional. Cloudy pond water not only affects watching the pond inhabitants, but it also has influence on the water parameters, so the company offers this high-performance filter medium as a solution. The filter balls have a patented 3D fiber structure that effectively removes particles above 10 micrometers (such as floating algae and sludge) within a short timeframe. Unlike common filter wool, the new filter balls keep their shape, can be washed out and are 80 percent reusable.