Quote Originally Posted by denverbear
humidity when the T5 is on is about 80 pct for 18 hours a day apprx....could the high humidity be a problem ?
oh i see, i thought it was six to seven days. you are stunted and your humidity is way too high. its probably higher with lights off. add a fan and sounds like you need an exhaust system and fresh air intake. yellowing i dont think is the issue, your lacking growth so uptake in the roots is lacking which is causing the yellowing. see how advanced your roots are if possible. get rid of tap water if feasible, adds to your ppm which allows less to be absorbed by the root system. like junk food for bud. your feeding 6x a day maybe cut back one and see if that helps. we still need info on how much your feeding nute wise. the fact you have not had to adjust ph suggests also there is not much uptake so try a leaching solution to minimize salt build up (clearex is one i know of.) high humidity can cause lack of respiration aka slow growth so definately start with that, lower ph and heat just a tad, and get a leaching solution. dont worry your salvageable.