A range of aquarium substrates using our source of natural products from across the globe. Oliver Knott AquaEarth 6lt is the No.1 fertile substrate for powering aquatic plant growth with...

A range of aquarium substrates using our source of natural products from across the globe. Oliver Knott AquaLava 7lt is sourced in New Zealand. Volcanic lava substrate for extreme bio-filtering...

A range of aquarium substrates using our source of natural products from across the globe. Oliver Knott AquaLat 7lt is delivering plant nutrition naturally with rare laterite spheres from the...

A range of aquarium substrates using our source of natural products from across the globe. Oliver Knott AquaiRON 15KG is delivering plant nutrition naturally with rare Iron Sand from the...