I appreciate y'all's input, and I place an extra value on Carolina Girls' info. I know just enough to be dangerous with this hobby, and I especially like to focus more attention to less maintenance and better living conditions for our "rescued pups", as I know they have had a tough life in the past. I think the aerated bottom drain, and utilizing a gravity flow system is a plus. I'm a good listener, and I really thank you very much for all the great info & advice.
