I did a tank like this years ago. I used a piece of glass and siliconed it into place so that it was water tight. Land on one side, water on the other. You want to make sure there is something in the water side for the salamander to crawl onto to walk out of the water.Hi, im new at owning a tiger salamander and I want to set up a water and dry tank for him. Any suggestions on how to divide a 20g long tank so a small part is a water pond and the other is dry for when he changes to land