*** HELPPPP Leaves are curling and are really dry *** WITH PICS

Please help it keeps getting worse and i cant figure it out, people keep trying to help but i haven't got any good advice of what to do yet??? they were fine to days ago and when i woke up yesterday i check on it to water it and the leave started to curl up and back what do i do i cant loss this girl.

Setup: 2ft 2 tube T5's with two 150cfl's (42w), 2 fans one being an exhaust fan on top of cabinet and the other circulating air on plant. Using Fox Farms soil. i transplanted it into a 5gal bucket about 2 weeks ago. Temp during day 75-85 night 65-70 Humidity during day and night 40-60.

What's your feeding it and how much how often etc?

its in Fox Farm Soil and ive been just giving it water but only when shes dry

Looks like fertilizer burn , ie over fertilization. your lamp is also to close, may be getting them to hot

Could be lots of stuff. The advice u get can only be as good as the info u provide. U cant just show a pic and say "Why..." I think u over water, prob use tap, 85 is hot, unknown PH & ppm, were looking at perfect conditons for root rot, if thats not already the issue.
If you can provide me with the ppm and ph levels of the water before it goes into the pot and also the runoff ph & ppm I can give u a better guess, for now I'd say flush with 10 gallons of RO, or distilled water (NOT TAP WATER!), make sure u have good drainage in ur 5gal pot, if not drill more holes. That 5g pot should go about a week or more with a plant that size without needing to be watered.
Hope this helps, good luck

thanks for the help ill try to be better at letting you know the problem and im gonna try to get a ppm meter whejn i do what should the ppm be?