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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)
Fast Free Delivery within Mainland UK on orders over £60.00.
We offer free mainland UK delivery on orders over £60.00. Smaller orders under £60.00 are subject to a £6.95 delivery charge. Delivery will typically be made within 3 - 5 working days but may be extended during busy times of the year.
Extra charges will apply to certain locations for example Isle of Wight and Offshore Islands. In some cases we can even deliver outside the mainland e.g. Channel Isles and arrange the VAT element for you. In all instances please contact us today for a personalised quote.
We Can Offer Next Day Delivery for £9.95.
To meet our deadline for this service you must order before 11.00am to ensure delivery for the next working day. This excludes weekends and bank holidays.
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