The bulb is a bright white 120 watt fluorescent bulb. The humidity goes from 37% to 43% the temp goes from 73°f - up to 81°f well I've only seen it go that high once after I watered it and it was kinda hot outside. Is that fine I'm looking to buy a better light I noe I want atleast a 400bright watt hps. For flowering but I'm wondering if it will get to hot in there with that would a 250 watt work