lighting issue please give me some input

I have these clones under a 150 watt hps light, they are new clones so they arent very big. I have the light about a foot above the plants. Recently i have discovered some of my plants have yellowish spots and the tallest plants have become limp. The leaves are kinda dry but they are water regualrly and when needed. I am just wondering if im having a lighting issue. Does anyone know what a good height above the plants should be for the type of light i have??


Thanks so much,

SammiGro

I have mine about 18 inches from the top and I also have some cfl's down low so she won't stretch. What are your temps and humidity levels?

Your HID HPS light is too close bring it up about 3 feet. Personally, where your at right now, I think you should be using cfl lighting until the plants get about twice the size they are now.

Are you using Aero hydro or soil?
What nute are you feeding them and how much.

I was using soil that plants have since died now iam doing a grow in the aero garden with autoflowers i started from seed they are doing good I have a journal if you would like to check it out thanks for info guys

thanks so much
Sammigro