might wanna ask Tim (Tim8111); seems like a sawa good bit of insulation and I'm pretty sure had it sealed too-the only problems then become with mold/mildew---but there again, Tim had I'm sure over 1000 gallons of tanks in his garage too-so smaller tank probably would mean that drastic steps-but I would think lots of heaters and chillers, but would prob. go ahead and insulate it and seal it the best I could (to help save on bills)-I'd also put in some type of attic fan-type thing to remove the hot air on really hot summer days-either that or a window unit (or both)
