i got 3 SNOW WHITES in a 5 gallon tub, under one 400watt switchable,with a fixed wing reflector, in a 7x7 room. temp usually around 78-80 deg. Towards the middle of veg, i was still using full strength B.C.grow products.then i started to notice the very tips of my new leaf schutes were burnt, and some twisting,an a little wrinkling on some of the new growth down the stem.I figured i had nitro burn. my brother told me to switch to 1/2 strength,so i did.(i didnt flush the roots,before lowering nutes.) Dont get me wrong, my plants are about 3-4 feet tall,an still look pretty sweet,bushy too. But now im 15 days into flowering, still on half nute solution, and still kinda see the same stuff happening???(Ph is around 6.0-6.5. I am GREATFUL to see all the white pistols coming out,and it hasnt hermied. Oh yea, i also just surrounded it with that reflective bubblewrap, to utilize more of the light to a somewhat 4x4 area. Anyway, my brother thinks im over reacting from reading all this info on the net. I dont know what to think. or do. PLEASe HELP.