sick plant. some problems on first time grow

was about to flip to flower later this week, but started to notice droopiness, yellowing and some brown spots on 2 of my plants.
im using ffof and perlite. 70/30. water is normally ph'd at 6.3. had an overwatering issue early on around week2, but i though i corrected it. is it cal mag deficiency?

Looks like a ph issue or nute problem. Could be anything really, you need to tell us everything. I'd give cal/ mag to be on the safe side as it won't do any harm. Your ph is a bit low imo, raise it slowly to 6.5 it's the sweet spot for soilless mix for all nute uptake. Using a 70/30 mix I'd personally be giving a small dose of cal mag when you feed at least once a week. What nutes, schedule,etc but it's probably the knock on effect of your overwatering if everything was ok before, it takes time for things to take effect in soilless. Did they recover after the overwatering? How long ago was it,?

Im using the GH General Organics nutes. The overwatering happened about 2 weeks ago. they bounced back when i let the soil dry, but they did get a lil stunted in growth. Just noticed a little yellowing on monday after watering and noticed the brown spots today. i usually do give them cal mag during their feeding. I checked the calibration on my ph meter and it was pretty much on point. im gonna give it a calmag ph'd water tommorrow or when the soil drys out. probably wait another week or so before switching to 12/12. what do you think?

Make sure you let them dry out completely in between watering the roots like to dry out. Wait a week and watch the new growth for health. MD