2 months ago I purchased a T5 HO to vegg my plants with. It became obvious very fast that the light was to powerful to use on starts or younger plants because it fried them immediately. Also, put the Temp in my growroom/closet to over 90f. I increased airflow to unreasonable amounts with absolutely no luck at all. I gave up on the light and went back to all LED's, but just recently am trying again. I increased airflow (again) and raised the T5 to 18" above the plants. It hasn't fried the plants (yet), but once again the small(er) area heated up to over 90f and the plants start to look wilted. My best guess is that the panda plasic...well, I have no good guess anymore. I'm about to take this light out and shoot it!!