Jonathan, Because many dbts seem to be coming into my house and none are leaving I am becoming fascinated by your 100 gallon tubs. ๐ Can I ask where you got them? They don’t look like the Home Depot outdoor ponds that are narrow at the bottom and wide at the top with vent holes at the junction where it gets wide. In one it looked like you put a 12×12(?)inch block of pressure treated wood as a basking spot – does the wood rot in the water? I have always liked the island basking idea because it is less likely that the animal will escape. That looks like a great cost effective set-up if you don’t mind the reduced visibility. Moving around a 100 gallon glass aquarium is no easy task but this tub looks easy to move around. I wonder if the dbt missed the glass after you put them in the tub? Bob — In diamondbackterrapins@y…, “Jonathan Helms”