Ok I posted on another forum for beginners only one answer and he said looks to be nothing wrong but I'm wondering could it be a phosphorus deficiency or could it be a purple pheno I'm growing a white widow auto flower by pyramid seeds it is grown under a 150w led on a 20/4 light schedule and it is on day 107 from seed it is alittle behind because it was sharing a closet with an photoperiod plant it started to turn purple a week ago slowly from the top leaves after I watered it with ph water at 6.5 after I posted on the other forum two days later the leaves started to curl up and look brownish can anybody tell me what is wrong temps range from 75 to 73 humidity 40 to 35 could I just have one of those cold spells my room gets pretty cold could that also effect the grow closet temps? and this is two days later we'll today