Treatment Direct Aquarium Filter Media

Bio-Block: Bio-Block is another media that is now available to the pond world. A simple media created by the joining of net tubes into 'blocks' which can be used in the filter, either whole or cut to fit. This media has many advantages over others, the most important is the easy maintenance and it is almost impossible to clog with flow rates of 7500 to 10000 litres per hour per m2 of surface area. Good if you go on holiday. The longer it is established the better it works as the bacteria build up a filter web between the net elements and trap the finer particles. Being easy to clean without removal makes this an excellent media for all ponds.