Thanks everyone, The cold is probebly the major factor here, as I am growing in an unheated shed. Power usage makes it impossible to install a real heater in the unit, I was hoping that the heat from the lamps would prove sufficiant. I'm going to try a small fan/heater that I have directed at the plants to up the temps. I was under the assumption that cold (lows around 45 deg) would do nothing more than slow the growth rate. My ph test kit should arive in a day or two, then I could get a more accurate handle on the situation.

Thanks again for the input
Randm999 Reviewed by Randm999 on . brown splotches and purple stems First time grower and first time poster. I know I've seen this symptom in the various posts befor, but I can't seem to locate it. Indoor grow, under two 400 watt mh. 24/7. soil: Organicare Pure Earth. in 5 gal containers. White Widow aproximately 7 weeks into veg. Temps are low, as the grow room is an outdoor shed, lows are aprox 45 deg highs around 70. Ph unknown as I havent got my meter yet ( Its on order) Fed twice with Humbolt nutriants 5-9-4 at 1/2 streangth. and twice with Alaska Rating: 5