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[seventhchild]

I still have the grotek however I was inspired by the the 20% more yield guaranteed by Advanced Nutrients. .

guaranteed ? then return the AN nutes and go back to what ur use to.to increase yields 20% or more INVEST in a EC or PPM meter and tweak the grotex. sorry ....NO guarantees !!!!! a good EC/PPM meter will cost less than that AN snake oil and will be much much more usefull.