Prestondillan15
New Member
Hello I am having a hard time figuring out how to go about buffering a brick of coco using organic dry amendments such as gypsum and epsom salt. I do not want to use cal mag bottles supplement as my whole grow will be organic dry amendments. Can someone point me in the right direction of a good buffer mix that is organic ? The fertilizer i use has 6% Ca in it and 1.2% Mg, i noticed that the cal mag bottled supplements only contain 3.2% Ca and 1.2% Mg. I was looking into using gypsum as a Ca supplement but not sure on how much to add per gallon since the cal mag bottled supplement ratios are so low.