my plants are about 3weeks old and i the last week the tips are going yellow and then brown and have have been curling inwards. I have 2x125w cfls and they are about 10cm from the plant the tem is 26-29c most of the time but sometimes is dose go to 32c max.
I'm pretty new, but I'm gonna guess not. Those cfls at that distance shouldn't stress em. What are you using for soil?
Transplant them into good soil like some fox farms ocean forest. I had the same problem because I tried using cheap soil from Home Depot. Also check the ph of your water and make sure you have a fan blowing and maybe a humidifier if your grow room is really dry. My grow journal http://forum.grasscity.com/indoor-grow-journals/1323166-another-noob-his-first-grow.html