Looks to me like you have a serious K deficiency. Whether it's due to overdose (high ppm) or lack of i can't tell. You need a ppm meter. If you can't get one try starting with bottled water which runs about 10-20 ppm. Cal-Mag as pre directions and fert at 1/4 recommended strength by volume.
seldomBLUE Reviewed by seldomBLUE on . SHMEH! Can't seem to diagnose! Hey guys, First time hydro grower here. having trouble figuring out whats wrong with her. Nutrient burn? heat stress? Lowered the temp, raised the light and cut nutes in half after a flush. She's growing like crazy but the problems still there. Any help would awesome. 60%indica/40%sativa hybrid clone end of 2nd week recirculatory hydro drip system Clay medium 250 watt MH bulb Avg temp/humidity 77F/45%RH Rating: 5