HabiStat Coir Coarse Husk is a compressed block of coarse burrowing substrate for species from humid environments. It is 100% natural, organic and comes from sustainable resources. Biodegradable, non toxic, non abrasive. Wets quickly and holds water without draining. Directions for use: Place block into tray or bucket, add 3 litres of warm water. Leave for 1 hour to allow Coir to increase in size by 8 times. Top up with more water, if necessary. PH5.4 - 6.8 - Coarse Burrowing substrate - 100% natural and organic - Non-abrasive - Holds water without draining