No. My tank is in the bedroom. I have some rather dim moonlights that I leave on all night. But we had a powercut the other night and within minutes he was trying to jump from the tank. I put a net over the tank and left him for an hour or so but the jumping didn't subside, so I got a torch and shined it at his burrow. After 10 minutes he was back in the burrow and stayed there all night with the torch on.