wassup hellraizer, thanks for helping me on this. Ok so this is my 4th attempt on doing 6 inch rw on 4x8 flood table. I feed 3x daily. once hr after light on, 2nd mid day and 3rd one hr before light off. girls r started yellowing again. lower fan leaf r getting yellow and plant kinda light green. i use sensi grow a and b with ph perfect from advance nutes. b52, cal mag, and monster grow. about 800ppm. I also add heis tea straight to rw and 1cup per 10 gal on res. water temp r about 72-73 because of my 120w air pump blowing hot air to res. I just started using a powerful air pump. before my water stay around 68-69 and i still had that problem. I flood about 1inch and take about 5-8min to drain. Im so tired to root rot. it seem to happen every time. I know people with dirty ass grow room with ton of spider mite and still about to pull 1lb per 1000w. idont what in doing wrong..maybe i should go soil?
Yellowing from the bottom up is a Nitrogen def. i would up your base nutes (seni grow A/B) 800ppm without the sups
then add your sups for a total of 1000 to 1100ppm, also add sensi cal A
for bloom you need to use seni bloom A/B seting your base ppm at 800 to 900ppm then add sups dont go over 1200ppm
also start using sensi cal B
if im reading this right you only use sensi grow a/b with b52, cal mag and monster grow
stop using the cal mag and get seni cal a and b
stop using the monster grow
Heres a fast break down of what you should be using
sensi grow A and B.
sensi bloom A and B
b-52
sensi cal A and B
once you get your npk problem worked out then start looking at them roots
they look stained from the tea so stop thinking its root rot! I dont see a issue.