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This Alfagrog is a porous ceramic pond filter media which is made under controlled conditions in Staffordshire, U.K.

This pond filter media has a very high surface area making it an ideal material on which micro organisms can adhere and boost biological decomposition of pollutants.

Alfagrog is a Volcanic rock and has been used now for several years with a great deal of success .. it is very inert and soon colonises with beneficial bacteria ...

This media is made of a highly porous material that contains many thousands of tiny pockets in which bacteria can thrive making in an ideal material for biological filters

Only £16.95 when picked up from our premises

Alfagrog 15 kgs
£ 19.95
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