200w green crack grow any advice would help.

i've heard really good feedback about mammoth P increasing yields/density, just kinda expensive @ $0.20 a ml or so, but only dose 1ml per gallon.
 
Mammoth P is the real deal. If you will watch on YouTube growmau thinks that's right he puts half ml per water. He shows side by side with six plants. The only difference is one side went without P for 17 days. The side with P entire grow yield was 190 grams more than side w/o for 17 days.

Really like it myself. It's worth the $
 
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