Much thanks for the welcome and most of all for sharing what is clearly a wealth of knowledge. the information I found from mostly your advice to others helped to turn around a bad situation on this last run. I have used hydro for several yrs using a quantum system, rockwool slabs with hydrofarm crystalized nutes and a 1000 hid. I stuck to a formula that I knew to work well, This one I had to stealth/downsize to cabinet, new breed, 400w, new nutes(switched to supernatural since hydfrm stopped distrib) The hell started when I forgot to ph ballance the clay pebs(first time use) and the ph would not stabilize. Also the guy at the store handed me gro-terra and I never noticed for 2wks til P tox set in. I then had the fan on the cooltube quit and got to 105 before I got to it. Water pump quit after that and the stresses opened door for more trouble. It almost cost me 6 plants but now they r a wk from finish and looking awesome....that mendo purps is some tough ass shit!!!!