Pond creatures can be added to your water container for added interest and to help maintain the ecosystem balance. Several small snails are very helpful, as they eat algae, fish waste, and decaying organic matter. Fish such as mollies, guppies, platys, or gambezi are good choices. They do well in the variable water temperatures of a small patio pond, plus they eat mosquitoes. Larger containers of 20 gallons or more can handle one to two goldfish.
