my room is getting to 104 i have one fan and a 600 watt metal halide that uses a digital ballast. is it okay for me to run my ballast on 75% or even 50% i have herd it ruins the bulb but i have also herd to change the bulb when starting new crops i had i on 100% and it killed my seedlings at 17 inch away from canopy i did not realize the heat given off bc i had to leave quick after set up i must start new any suggestions ? i have a vent fan in ceiling.