Rack system temperature concern.

[BFT12890]

Hey all, im building my first 41 qt rack system (here it is, i still have to put the back and side panels on to enclose it)



I thought I read everything I needed to about these racks, but I just read about maintaining ambient temps in a cold room.

I was planning on using a foot of 11" flexwatt on the back side for the hot side.

My concern is, the temperature of the room the rack will be kept in bounces between 65-70 degrees. will the flexwatt do a sufficient job in keeping a proper hot side/cold side temp AND keep a decent ambient temp?? is there something I should change or add to my rack to make it work? ive got a 40g and 55g tank sitting empty (unwillingly) that I can use instead, but id like a rack for when I get more snakes.

thanks! sorry its a kinda drawn out post.