Any one in particular I should buy. Fixing to get into my first indoor grow and need to buffer coco coir
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General Hydroponics is what I have been using.
Added to the water I hydrate the coco with, I let it sit for a couple days or longer and it works fine. Get a quart as it lasts a long time.
This plant was harvested after 5 weeks of vegging and 10 weeks of flowering.
This is the remaining lower stump after taking the branches off. You can see there are no calcium or magnesium issues even after 15 weeks on the lowest and oldest growth of the plant. Never added cal/mag during the grow. Calmag is an overused unnecessary product except for buffering the coco at first. I use Jacks without the Epsom salt component. Just part A and B.
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