Thc247
Well-Known Member
I'm in soil and NFT hydro. Some strains have a tendency to have purple stems and im currently running exodus cheese, just in one square.
Red stems to me are a sign of stress, whether it be deficiency or lockout.
In hydro I've run many strains without any red stems at all, but only when I've been careful with the levels.
I 100% agree that raising the PH to just above 6.5 is perfect for P and K to be used.
What time of day did you take the photos? 40% RH seems very low to me and recently I've noticed my plants having trouble taking up the nutes as they are drying out too fast. If it was just before lights went out then no problem. Otherwise what's the RH when the lights go out?
was a couple hours after lights on it normally 35% rh