Gorilla Girl XL scrog

So I’m getting these dark spots on the mature leaves. Unfortunately the scrog makes it hard to pull the plants out and do a proper run off reading. I can’t tell if it’s lockout or calmag def. I’m going to maybe lower my ph to about 5.8 to 6 on the water and see if that fixes it. Day 52- there’s a strong sweet cat pee smell coming from the one later into flowering. Once I get the shape on the other plants I want I’m going to remove the scrog to get to them a little easier to do a flush. The other 2 plants are starting to flower everywhere. The undergrowth is crazy on these plants. Can’t wait to see how they grow in the next couple of weeks