Whats Wrong????

[YungLocq]

My plants leafs are drying up there still green but there drying up the plant is 3 weeks old i had the lights about half an inch from the plant for about a week then today i saw the leafs were drying up so i moved them about 6inchs away from the plant......Can someone tell me why the leafs are drying up?????

[texas grass]

what type of light are you using, if its a hid and no cooltube or anything 1/2" is way to close
how often do you water

[YungLocq]

I use three of these 13w fluorescent bulbs and i water it once a week and when i do water it i also spray the leafs down with water i use tap water but i let it sit out for at least 24 hours first

http://dev.bulbamerica.com/photos/products/3/75/753/thumbnails/250x250/Energy-Minitwist-EL.jpg