One of the most unusual rocks on the market right now is AQUADECOR (save the) Reef Rock. (Preserve the Because it is not extracted straight from the ocean and has no effect whatsoever on the structures of living coral reefs, reef rock is a sustainable product. In addition to their chemical-free cleaning method There are never any unwanted algae or pests of any kind in AQUADECOR. The Kg sold For an average aquascape, we suggest adding about 0.5 kg of rock per gallon of the display tank. Additionally, since any extra can be used in the sump for additional filtration, we advise buying a bit more than you might require. It is advised that all rocks be cured before being