Heh, I'd love to be able to raise ambients in the snake room that way - especially in winter - but I cannot. The snake room also happens to be the bedroom!

Another trick I use, with tanks as well as tubs, is to insulate them. This not only keeps heat in, but it makes the back and sides opaque for more snake security.

In this apartment, there's always some tweaking to be done depending on the season: In winter the corns are fine since the house temps are around 71, but the BPs cool side t-stats are always going. In summer, those cool side t-stats hardly come on at all, since the house stays around 80, but the corns are too warm! Just can't win.