I read on here that it was a good idea to put stone under the water bottles, one to catch the drips and two for the piggies to keep cool - well they certainly appreciate it as you can tell by the pigture!
I did the same! my piggers love it and that pigture is just soooo adorable!!
although I need a bigger one because I have two in the cage and it only itts one on it unless they decide just to have theyre piggy butts on it instead o theyre whole bodys lol