CANNA COGr Buffer Agent is a special liquid that is used to soak and buffer COGr boards. CANNA developed this agent especially for the preparation of the COGr growing medium.
Each slab makes 21-25 litres of coco when decompressed. A litre pack of COGr Buffering Agent dilutes up to 500 litres - one application per crop.
ALso available in 1L & 5L