according to this website, what we are doing (using bacteria filters) is torturing our fish. their brand of filters use algea to clean the water of ammonia, i think they said metals, etc.
dl it for yourself, and tell me what you think...
http://www.eztank.com/pages/order-download-options.htm
dl it for yourself, and tell me what you think...
http://www.eztank.com/pages/order-download-options.htm