I just got a really good deal on a 40ft. tank and am hoping its not too big for my 1 yr old (well about 19 months). She was previously in a 15 gallon only and is just over 3 1/2 feet long, so I had been on the eye out for something bigger. i could not resist buying this tank and am wondering if she'll adjust okay in the bigger tank? her temps will be the same and I added a couple more sticks and another hide, so she'll have a hide on each side as well as in the middle, and then her tubes to go to the other side if she wants. anything else you guys can recommend ? im also trying aspen for the first time as i have been using paper towel, i plan to move her into the new tank tomorrow as she jsut ate her 1st adult mouse 2 days ago.