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hydroponic Carolina Reaper issues: Hydroponic DWC

I have been having issues with this carolina reaper plant for the past few months. I know it is mature enough to produce peppers but the leaves & flower buds keep curling up, falling off, and turning brown and crunchy on the edges. The average temperature is 74*, humidity 63%. I have it under a full spectrum LED light that draws about 125w. I use general hydroponics nutrients and follow their recommended ratios for transition to bloom.

Any ideas what I'm doing wrong? This plant is very frustrating.
As mentioned cut the nutrient, I have run just plain old rain water to sort of give the plant a flush out.
I used the GH a few years back and had it at about 450-500ppm.
Sounds drastic but a prune may help.