Please identify my problem i cannot

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I just took these shots, after i had just watered with some PH down and superthrive, but before this they were extremely droopy, and im hoping you can see the yellowing from these pics. Sorry pics arent very good, its a cell phone and the only camera I have right now. Please tell me what looks to be wrong if you can tell from these shots. New growth is affected, and the new leaves are twisting and curling and looking spindly. Im using sunshine mix #4 and feeding with the complete fox farms line. So far though I have only fed them 1/4 strength a couple times every other watering. Temps are good, and im not overwatering because they get droopier the more days i wait to water. Please help!!!!!!

bump please anyone have input

if it was over watering, how could they get droopier each day that i dont water? if it wasnt for that, i might wait as long as 10 days, but im not seeing improvement day by day. and yea sry bout the pics

are you sure your ph is in a acceptable range?

maybe you are not watering them enough my plant need water every 2 -3 days max

My temps never go above 81, when light is on it stays around 77. when off, it gets as low as 60 but rarely. I dont haave a ph meter but getting one as soon as possible but i just estimated with some ph down today as per some advice. I dont know when i stick my finger all the way in, its always damp enough but u could be rite mellow. New growth looks twisted and yellow, and now on one of them there is a rusty yellow formation appearing in the middle of some of the leaves. pics-

different fone hopefully u can blow them up the lines r cuz of the light

bump please look at these pics and diagnose