Yamitsu Alfagrog Pond Filter Media 2kg albino sturgeon Max pond size 1700 gallons

Max pond size 1700 gallons (7650 litres) - Max 1000 gallons for koi ponds

The Unique selling point of this item is that it is tearproof – if the liner gets punctured the hole will not 'run'

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250 litres

fibreglass

Yamitsu Alfagrog Pond Filter Media 2kg albino sturgeon Max pond size 1700 gallonsAlfagrog 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. It's high surface area makes it an ideal material on which micro organisms can adhere and boost biological decomposition of pollutants. The highly porous material contains many thousands of tiny pockets in which bacteria can thrive making in an ideal material for biological filters. Alfagrog is