CFL stress?

I have 10 plants that had been under tub flours (50-60watts @ cool and warm white) for about 6 weeks. A little small and stretchy but otherwise looking great. Started from bag seed.

Bought them some lamps: 4 CFLs at 100 watts/2700 and 4 at 80 watts/5000. They have been getting this light for 7-10 days and are falling apart. I have what appears to be a N deficiency, but waterings have always included a 7-15-7 fert at 1/2 strength. They also got really droopy. And I have some fungus going on on the weaker ones. I may have over watered the last time or two but am being very careful now.

My theory is that the lights overwhelmed them but don't quite know what to do about it.

Thanks for any ideas.

Pictures? You might be overfeeding.

Also check you Ph. If it's too high or low some vital nutrients cannot be absorbed at all. You want between 6-7ph both soil and water.

How often do you water????Do you water with that fert everytime???

I’m adding some pictures so you can see what’s going on. I see three problems: 1) Yellowing of older leaves and some redness in the stems 2) Dead spots on the leaves of some of the younger plants 3) Old leaves drying out and curling up on the younger plants.

I did a soil test with one of those kits: PH=7.0-7.5, N= low, Phosphorous = average, Potash = average

They are in 2.5 and 1.5 gallon pots and the big guys are 19-20” tall. Up until all this started I was watering every other day with ½ fertilizer. I’m pretty sure I over did the watering when the lights went up. To fix this I let them dry out for 3.5 days and then carefully watered with fill fertilizer to try and address the N shortage.

Was going to try blood meal because I’ve read that will fix both the N shortage and lower the PH. Anyone ever done this?

Thanks.

Oh also, I know my PH is a little high. How do you adjust that? I asked at the local Lowe's but they said they didn't carry anything that did that.