As far as I’ve heard, a rain chamber basically reproduces a heavy rain, which is the only time these frogs get “in the mood.” It basically is a tank with an inch or two of water on the bottom and a pump that produces a heavy rain. That’s all I know about them! As for food all the food I feed is commercially bred, I don’t feed anything from the wild. I also check for parasites regardless with a fecal at my exotic vet yearly just to be sure!