Triage Ineffective. Week 3 flower. Getting really nervous...suspected N def. RH 45-50%, 25-27C, molasses, neem 1.5 wks ago, water to slight run-off.

Water run-off good -- 6.3-6.5pH. Plants are drinking much more than they were a few weeks ago, so I've upped the water feed from ~.4L to ~.75L. I initially suspected watering issues early in veg and beginning of flower, particularly due to my soil type (psychological fear due to the "new growers ALWAYS overwater" notions); however, the top layer of soil was NEVER soggy wet. They always seemed healthy. I use a moisture probe, and that registers "medium" to "low" degree of moisture before my water and nute feeds. Although, I don't know if I 100% trust those readings. I believe (not 100%) I'm not overwatering, because the plant holds a healthy amount of water during watering (Additionally, no leaf droop). If I was overwatering, the plant wouldn't have the same run-off w/ the same amount of water, right? I water to slight run-off, and clean up excess water, if anything overkill, ~30 min post-feed. Really at a loss for what's going on. Top of the plants look really healthy, w/ exception of one that is slightly light green (pictured). Where is all of this yellow coming from? :(

Also are u letting the soil completely dry before watering.

Have u flushed with ph water and tested the runoff? Runoff ph might tell u whats happening with the soil