Alfagrog Filtration Medium 16kg Bag

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Alfagrog is a Volcanic rock and has been used now for several years with a great deal of success. 

Alfagrog has a very high surface area making it an ideal material on which beneficial bacteria (Nitrosomonas and Nitrobacter) can colonize leading to increased biological filter performance

How it comes:

  • In 16kg Bags (Large Pieces)

Delivery Info

FREE Mainland UK* Delivery on orders over £40.00.
or £4.95 Delivery on Orders Under £40.00.
 £6.95 Next Working Day Delivery.

 *Additional delivery charges may apply to the following destinations: Isle of Wight, Isles of Scilly, Northern Ireland, Republic of Ireland and Scottish Highlands. Please contact us for a customised delivery quote.


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