need help with a plant

ok i have 6 plants going in a hydro set up i'm using coil lights that are about 2 or 3 inchs from the top of my plants but one of my plants the tips of the leaves have tuned yellow but all the others are a good green and growing the one that has yellow tips is tall and was real close to a light one morring i think it may of got hot from the light but just want to make sure there is a pic but its not to good and if it was becouse a heat burn from my light what should i do if any thing i keep a close eye on the lights now to make sure they are not to close will the plant be ok i have add a pic of one of the other plants that is doing great for only being 9 days old

Try not to let it happen agian. They'll be fine.

As above. But if you're using flouro's you've got to expect this to happen, maybe every day.