My little guy is still a baby (not sure how old but he's about 10" long) and currently in a 125 gallon tank. I am working on building his full enclosure and sketching the layout/what I need and want to get everything right the first time (I hope!). Is insulating something that is suggested? My idea was to make the frame and put a sheet of plywood on outside and inside of the frame and insulate between. The enclosure will be inside and my house stays around 70 degrees. Is insulation an overkill?