Greetings and salutations, First and foremost I would like to thank everyone for all the wonderful and extremely helpful information contained within this forum. I've been reading like crazy for weeks, and have learned so much. I feel very confident with my first grow so far, and I owe it all you guys. Next, I have a 3x3x6 DR90 with about 400w of T5 HO. The tent is very close to a large window for easy intake/ventilation (5 feet of ducting). The climate I live in rarely gets above 90F, so cooling isn't a HUGE issue, but an issue nonetheless. I'm trying to be semi-stealthy, as well as on somewhat of a budget, and the S&P TD100X seems like a nice choice, I'm just curious if it will still do its job well enough with a carbon filter on it. Temp inside the tent seems to hover around 85-86F (with all the lights on) with just a little 50 cfm Broan bathroom exhaust fan. I'm hoping I can bring it down closer to ideal even with a carbon filter attached. Any input is very appreciated.