Filter Substrate - Biological Filter Media

Filter Substrate is a biological filter media resembling rock like pieces.

The surface of the substrate is covered in holes and fisures giving it a very high surface area

Perfect for the colonisation of bacteria

Ideal if you are making your own filter

Supplied in 10 litre bags

Filter Substrate - Biological Filter Media Bradshaws, based in York, have been around for many years and are well known, respected and trusted.