Grow Two: BF Purple Punch Auto x3

Day 36 Update: Plants are definitely showing signs of various stresses that I'm thinking is most likely caused by high pH in my soil. I'm currently using lemon juice as a temporary pH control measure. General Hydroponics pH Up/Down will be delivered Monday, so the lemon juice will have to help the pH for a few more days. They all got a fair share of 2.5 L of water in the high 5.x to low 6.x according to the 3-in-1 Soil Meter. I'm hopeful this will help contain damage for a few days until I can do a thorough flush and rehydrate. Knowing what issues I've been working through makes me all the more excited for the next grow! Was looking at Dutch Passion Auto Banana Blaze or Critical Orange Punch for their cost effectiveness. Day 37 Update: Just some new pics tonight. Day 38 Update: I bought a new soil pH meter from Home Depot tonight as well as some soil acidifier. Soil readings showed toward if not slightly over 7, so they all got around a L each with Tiger Bloom pH'd to around 6. PPA2 is showing some surprising development and the others are pretty bushy. The red stems have me worried because I know they're a mag issue. Hopefully I caught some of the problems early enough that they won't be too harmful later. Still pretty happy with this set. Day 39 Update: They seem good today. Things got moved around in the tent a bit, so the pic angles changed yesterday. Otherwise, just new pictures today.