your rite, just some convo back n forth. i aint trying to knock you down. shit if you can get sucess out of that attic grow i will try a similar setup lol. ive tried growing in the attic and it wasnt good at all. + i only had 80 watts of fluro tubing at the time for testing and it got up way past 100+ degrees.Even in the night time where its cooler outside it was too hot up there.+ i had a 2500 cfm fan in the tent + exhuast and 2 other fans blowing air.it sounded like a airplane up there and was hotter then the dessert.I live in florida it gets hott.
what are your res tanks made of? i understand the res dont get boiling hott but it probablly does throw off some heat.thats just more heat in a hott area.for example when u pour hott coffee into a coffee-mug the mug gets warm to the touch cuz the coffee warmed it up.
whats a air circulation pump? are you talking about exhaust fans in the bathroom's and kitchen? everyone has those.unless you have air conditioning vents in the attic there is not going to be cool air up there.i havent really seen house's with a/c in the attic.
fans only push around air,your just pushing around hot air. they dont provide air conditioning.
what about water source? your gonna have to be carrying alot of water up to the attic. + hoping you dont spill any up there that will cause leaks and rot threw the ceiling.
its not going to be cheap to grow in the attic. i had to bring all my shit down and setup in my bedroom. i know your having security issues with ur mother in law but you should plan this out better b4 ur plants die on you up there.