am i reading this right?...you flower with 125w?....thats it?125w?......i would at least equal that to my veg chamber....you seem really dialed in with the ppm's and looks like you got all the toys & such....did a salesman sell you a full set-up?...i'm only saying that,because if you had assembled it yourself(rounded up everything seperatly) you would be more knowledgeable as to whats going on(no offense)...and what you need.....after 2 years of "gorilla"growing,my opinion is this...indoor grows rarely last longer than 6 months (per full session(clone veg flower).....flush that bitch(min 5-1 ratio...ph'd water...no more feed,just molasses every now and then...do you veg longer than 2 months?...molasses not only feeds the microbiotic lifeforms,their waste product enriches the soil...PLUS,its a cal/mag supplement...good luck