ya the window doesnt really matter im down here in so. Cal and it doesnt get to cold. But i built my 2nd rack and am planning on rearranging it but i kinda dont want to put the tank on top cause i like having the extra space on top of the racks... and i built a sweet ass stand for the 30 gallon.. idk still trying to figure things out. Also i keep my house themo at 78 so it stays warm in here.