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every auto is different. you need to think of it in weeks before harvest. I would wait till you see 50% red hairs, then you might have a week or two to go
 
every auto is different. you need to think of it in weeks before harvest. I would wait till you see 50% red hairs, then you might have a week or two to go

Is that 50% of the buds having red hairs or a 50% concentration of red hairs per bud? Also at what points to I switch between the early flowering nutrients, the "heavy blossom builders," and the late flowering nutrients? Should I only give it the early flowering nutrients for the first week of flowering and just a bit before flowering?
 
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