Packaged in practical boxes of 10 pieces, it is also available for individual sale.

COGr Buffering Agent

CANNA COGr Buffer Agent is a special liquid that is used to soak andbuffer COGr boards. CANNA developed this agent especially for the preparation of this growing medium.

User Instructions:
�Shake bottle well before use
�Fill nutrient reservoir with water
�COGr Buffer Agent to the nutrient reservoir with the dilution ratio 1:500 (200 ml per 100 litre of water)
�The EC of COGr Buffer Agent dissolved in (tap) water varies between 1.5 - 1.8 mS/cm2 (= the solution EC + the water EC)
�Recommended pH: 5.5 - 6.2
�Add � 12,5 litres of buffer-solution to each slab
�Let the swollen COGr soak for at least 24 hours before draining it!