Am onto my next grow and have decided that despite what it says on the bag I am going to wash and buffer the Canna Pro Coco this time as I have had Cal Mag issues every grow so far - no matter how much extra cal mag I give the plants they spend the start of every grow seemingly locked out.
So how exactly do I buffer - I plan to put the coco in a big plastic box with holes drilled in the bottom, wash it with water until it runs clear.
Then I need another box to soak it in cal mag solution - but to what EC strength should that solution be, and do I have to PH the solution? Does anyone know please?
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