Sorry for being an idiot - 1st grow - Yellowing leaves - Mg def?

[ktznj4]

Hi all, Does anyone have any idea what this looks like? Foliar over feeding perhaps? PH too high perhaps?
I'm trying my first small grow in a tent in the basement. Full story here:

Ktzn

Leaves are turning yellow. I foliar fed two days ago.

Looks to me as if I either overfed or have a Magnesium deficiency.

So, basically, I don't know if I overfed or underfed.

Thanks to all for your support.

 

[Peripatera]

I think it's ph lockout ph is too high flush you plant with clean ph 6.5 water if you don't have ph down use lemon juice to ph down your water.

 

[Thationfing]

I also think so. Did you check ph?

 

[ktznj4]

Yeah, I found the Ph to be high. I adjusted down and then...overfed. I've had the worst of the two I burned turn around somewhat after I diluted down the soup. I've had the other one, the one doing worse, sitting in Ph adjusted RO water for a couple of days and I'm just starting to add a very weak base nute. I'm planning on doing a complete water change and remix on Friday. Thanks very much for you advice. I really appreciate your time.

 

[ktznj4]

I've got the Ph under control and two of the three plants are looking good. I don't know when, where or what to trim?? Should I be trimming out all that itty bitty shit that growing on the stalk and the little leaves and stuff? Thanks very much. You guys are the BEST!