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I heard jorge cervantez say for organics you need to raise your ph to about 6 _ 6.5. Does anyone know if this is true? I'm using organic nutrients in a hydroton/rockwool top feed system.
A pH of 6-6.2 isn't high for hydroponics. I use a pH of 6-6.2 for my coco I would suggest the same using "organic hydro" in hydrotron or rockwool also.
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