Is this normal!??

This morning I woke up and turned on my lights and saw this on my top cola. I have 2 green crack that have been flowering since 1-21-12 under a 400 watt hps in good conditions. Fed weekly. Maybe its nothing, but again it could be serious. All comments appreciated! This is my first grow. It is a soil grow. Here are some pics I just took.

info......plz

what info do u need?

ph soil lights food humidity.........stuff like that. or at least describe what has happened, when noticed....
i see some frizzled bud, some yellowing of leaves. is your humidity low? lights to close?

k . 45% humidity. 400 watt hps 3 feet from top of plant. i use pro-mix soil and reciepe for success food. following all directions . ph is 6.8

hmm......i woulda thought very low humidity and light closer, by the looks of it.

if its waterin' time......give them a good flush, to be sure its not salts causing it.

i just re-measured my light and it wasent 3 feet away anymore. i think that was it because it was only the tippy top of the plant that was having the issues. As far as humidity goes im not to sure about my meter. i think ill put my humidifier in there for awhile. Thanks so much guys for your help!!!

good luck!!

reminds me of light/heat burn, ive had plants do that when either the light was too close or i've forgotten to turn fans on.

looks like they were burned to me...how close to the light?

Ok im back with more problems. I actually thought my problem had been solved when I raised my light but I dont think that will solve the problem. reason... my light 400w hps was about a foot and a half away when this problem began. So I raised it to 3ft. where I read some where, but after speaking with a friend he said that my light was NOT to close. So I looked up proper lighting distances and it says that a 400w could be as close as a foot away. I love my babies and am scared!!! All these months no problems and when it counts things are going wrong with my babies...