hey there, i am also new to the scene(of cultivation that is) I currently am at the end of the 3rd week of flowering and have 4 unkown strain bagseeds and one masterkush clone from an associate,all are under twin 400w hid MH fixtures that i picked up dirt cheap and hung from a custom built adjustable frame. i originally started them all (bag seeds-
in 1 inch hydroton cubes under 1 30w flouro.at about 1.5 inches from light,for 12 days then into 6 inch net baskets mounted in to two rubbermaidtotes,about 7"deep,14'wide,and 22" long. all sits on a custom built top above a 4'x4.5' poly tub about 14" deep it will hold aprox.100gal. but i have only about 60 gal in use.I am running a high volume res.ebb and flow system on 15 and 15 minute cycles. the tubs fill to 6" then drain via an overflow back to the main resivoir.then the tub slowly drains via 1/8" drain hole over about 12 minutes leaving 3 minutes for oxygen to hit roots and then its full again for fifteen minutes and so on.I am running Hollands secret nutes three part micro,grow,and bloom.also added some 10-52-10 for flowering nutes are at about 1080ppm now.and to be quite honest cant beleive the results! aside from removing three males and two stray flower clusters from a hermie(suspected victim of a light leak.)my plants are 37", 26", and two at 19" and the clone at a height of 18".i do however have one question for those who have been around... my res is 60 gal on a concrete floor in central albert in a basement "coldroom" maintianing an average res. temp of 23.5 deg with minimal light leaks and i have never changed the water just add 20litres every second day or so.my ph runs about 5.8 to 6 very consistantly, i add only r/o water will i and or should i be concerened about any scum,mold,algae and do i need to change my res.like i say maybe 40 more days to go.??