My experience with water falls in reptile tanks is it's more of a pita than anything. It sprays water around it, creating a Damp area that never dries out. Which in a cage with heat creates a bacterial or fungal nightmare. It required more attn from me than anything. And also It was a huge pita to keep clean. Algea was always growing in mine as well as it was getting pooped on and in. It's definitely not for me. But then again I need to look at things as healthy for the environ and efficient as possible. Perhaps if I only had a cage or two I wouldn't have minded it. But I do enjoy the look of waterfall features.