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Howdy uncledoug, The directions (from the GH web site) say to use the solution (15 ml per gallon (two tsp)) and run in the system for three to four days. Then drain and fill with plain pH'ed water for four more days. I have used this flush for several grows now and it really makes for some smooth smoke.
Campesino After posting this I read up on it, some Dr Coco guy.lol Thanks for the info. A question just came to me, during the last 48 hrs. can I combine flushing and darkness? Haven't tried the darkness method yet.
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