As some of you may know, I had a bacterial outbreak in my tank, both my lungfish and convict cichlid died as a result.. I blame myself as I rarely check the water parameters or do WC's... I have now learned no matter how clear the tank is, to do Weekly WC's and to check the water parameters at least once a week. I also have an aquarium journal where I write down the parameters, when I get new fish, and the dates of WC's.