runoff ppm

Ok guys I’m having some trouble in my grow room and I can’t seem to figure out what’s going on. The plants look heat burned, nitrogen toxic with twisted new growth and dark green almost waxy looking lower fans. New sugar leaves are twisted. Plant is really fragile, small breeze makes white hairs...

I’m starting 4th week of veg and I’m doing 4 sour diesel and 4 Durban poison in ff soil+perlite using ff dozen.I started 1/2 strength nutes week 2 and ph’d every time.ppm never over 1100.my runoff was 3800ppm.Was adding a tsp of Epsom salts to every 5 gallon cause this the runoff ph was 6.3.And...