Sorry to hear about heat issiues. I use those magnetic ballasts myself. And have since the late 80's. I've never had a problem with them. I wonder tho where are you mounting your ballasts? I have mine on a shelf at the top of my grow room. Heat rises and my exhaust is out of the top also. So it seems to help bye putting your ballasts as near your exhaust as you can. Better yet remove it completely from the flower room. I glance at your vid of plants. I hope you get some new pic's up so I can gander. GL and Keepem Green