shady.. i put together two of these systems.. one one documented in this thread had 3 runs that all went to shit... they each started out GREAT in the home depot tote vegging, then each transplant they went to shit within a week...
each time their was one variable that i figured caused the decline. GH root guard additive, bleach, low RH, too high ppm...
i finally ripped apart one setup, because i couldn't afford to loose out on making money any longer.....
the 2nd room which i don't have documented is a 16 site and had the same problem on the first run... it started off looking promising, but then it looked like i had iron deficiency within the 2nd week of being in the system.... i then saw an off gassing thread from npf sp? plastic tubing and the affected plants looked just like mine. the tops were all yellow.
i don't think it was goop, because mr dizzle used goop and didn't mention any problems, but i can't be certain.. the chemicals used in the setup were goop, pvc primer and pvc sealer. other than that lowes buckets, electrical pvc conduit, and pvc pipe.
i'm going to do one more run in this diy uc, because their is one more variable that i want to look into.. of all things, this is light distance from the top of the plants.
the only other thing i could do to make the situation perfect, would be RO water, but i really don't think that it is necessary with 100 ppm, 7.2 ph tap water.
5.5-5.8 ph, 1 ec, 75 F, 60 RH 600 Co2 ppm... these are perfect variables, so if it doesn't work this run i'll go to coco, which i have just figured out.
btw, that wasn't panda plastic on the buckets, it was 4 mil thick trash bags, or it would have been white side out!