An average sized rock weighs between 1.5 – 3kg and there are no rocks that weigh less than 1kg.

Please indicate in your Order Notes (located below your cart) if you’d like to receive larger or smaller pieces. We will do our best to match your request.This is a natural product so shapes and sizes vary.

A bag contains 20kg and are sealed and we cannot mix or choose specific sizes. As a guide SML contains rocks between 10-25cm, MED contains rocks between 20-35cm and LRG contains rocks 30cm+

Light grey in colour, this stone isnt as intense as Ryuoh and leaches much less KH. Really good if you enjoy the dark colour, but like softer water fish.

Cloud stone will slightly buffer pH and KH