What is wrong with these plants? HELP!

[sednal]

they are under a 400w hps. About 2 and a half weeks old. At first there were problems due to cold temps but once i got the average to hang around 75-80 everything started getting better and the new growth looked great. checked on again the new growth is starting to curl and brown along the edges. heres some pics. Have no idea what the strain is, just bag seed trying to get a nice pheno to make a mom. Any input would greatly be appreciated. I adjusted the light a bit higher because i wasn't sure if they were getting burned or not. This is only the 3rd indoor grow under the belt so bare with me, im an outdoor guy...

 

[free radical]

Well it will help to answer your question more if you fill out the form... but

what's your watering schedule like? what soil are they in? how close is the light? water PH?

(all of that stuff is in the form Im just busting your balls for it hehe), but really fill it out and then we can help you!

 

[sednal]

water ph is 6.5-6.7, light is about 9-10 inches from tops, water when they need it(finger test the soil and lift container to feel weight). Soil is Miracle grow potting soil. I know the soil isnt the best but my buddy purchased it, he said they were out of promix. but they will be transplanted in about 2-3 days and will definetly be put in a better medium. for the last 8 years i have started my outdoor plants in the same sized containers and grew them about a foot till then went outside and never had leaves curling or any problems what so ever. This grow however is at a different location under much different conditions. The temps when they were younger were around 60 F and were unable to soak in nutrients so we lost about 5 but the other 9 managed to recover. I thought eveything was going fine because once the temp problem was fixed and the water ph was good the new growth was very healthy and green but then it started getting real ugly and curling and dieing...

 

[sednal]

anything people?

 

[eman]

fill out the form

 

[OldDeadHead]

ph seems high & possible over fert......but fill out form & more people will help you.