ROWAlith W - media for Ca reactors
ROWAlith W - large media of 9-15mm grain size ideal for larger size calcium reactors, due to larger grain size it will resist tracking of water through the media often experienced when running small grain sizes in larger non fluidised reactors... Rowalith W is mined from ancient coral beds and provides the correct levels of Magnesium for your hard corals.
Specification
Around 800gr of media equates to 1/2 litre in volume