Aqua One Alfagrog Filter Medium (15kg)

Alfagrog is porous foamed ceramic material, which is lightweight, strong and inert- so it won't affect your pond's pH level or the water hardness.

Because it is so porous, it has a massive surface area which means more beneficial bacteria packed into a smaller area. This will keep your water cycled and crystal clear. 

Suitable for use in a wide range of pond filters and commercial set ups.

Please Note: This is a 15KG bag and is quite large. Please make sure it suits your needs before purchasing.