The only place I have left in my house to put fish is approx. 3 gallon porcelain tank. It has a handle on it when you push it does an automatic 100% water change, although the fish would be disposed of. Is there any way to screen it so the fish don't get washed out? Also need to invent system to add chemicals to eliminate chlorine and ESPECIALLY ammonia. Coldwater, freshwater only. I'm thinking Crappies.

