The Koi Collection
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Home » Koi Pond Filter Media » Alphagrog » Alphagrog
Alphagrog
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 ...
Alphagrog 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
Its only draw back - sharp on the hands when cleaning ... so please wear gloves..
| Item # | Description | Price | Add to Cart |
|---|---|---|---|
| ALPHAG | Alphagrog 15 kg Bag | £15.95 | Add to Cart |
