Crystal Bio is a unique, eco-friendly filter-media, heated in excess of 900°C, creating a hyperconnecting glass cell structure.

This produces media with a surface-area at least 10 times greater than most plastic alternatives. Furthermore, the weight is extremely low in comparison to other porous filter media: 50 litres of Crystal Bio weights 7,5 Kilos! Attention: Crystal Bio floats!

Advantages:
Crystal Bio media has an Inter-connecting porous cell structure
allowing for a massive biological surface area.
Crystal Bio helps prevent pH drop.
Helps reduce Nitrates
Suitable for multi-bay filters and trickle filters.#