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PH is probably off causing lock-out of MG/CA (or whatever) or toxicity of N (or whatever), as they say if you have any problems in soil/hydro fix your PH FIRST. Run PHed water through there on this next flush, check the runoff (so if you run 6.5 through and get 7.5, that is bad, if you get 5.5...

The question is somewhat confusing (carpet?), but seems to be in regards to "cold-air" entering your grow space. Don't blow the air directly on the plants, IE point the exhaust at a wall, ceiling, floor and watch your humidity/temperature over 24 hours. If your humidity or temperature doesn't...

If you would rather suck into the filter than blow into it, use a 6" y connecting the two rooms, up stream of the y put the filter suspended/sitting in a rubbermaid or sealed/half-sealed box. Made a nifty diagram for you. z

Blu, Definitely think I will do something about the rockwool next grow. Thanks for the advice and the detailed response!!!! Seriously!! Turns out where I am now the tap water comes out brown at times - I got to thinking.... I'm pretty sure the problem is copper toxicity at this point, as when I...

Blu, Awesome Journals, thanks for the detail and your time!! ++rep I do NOT want to hijack your thread but you are the only guy I have found that has my problem and fixed it. (feel free to delete this post otherwise or tell me to shorten it to just (how did you fix..) :) In any case, I am...