Well I lost my first fish. My white comet died last night. Everything seemed normal, they are all eating and acting normal. Picked him out this morning as soon as I found him. No visable signs of damage or disease. So I got to googling. Found that I needed to test for hardness and alkalinity. Just tested everything else(all normal). Well they were both way low, so I guess I'm lucky I only lost the 1 fish. Also found that the floating algea that I been having is a bad sign of the 2 being low. As of now I'm doing the 1/3 cup baking soda per 1000 gal treatment. hopefully in a couple days everything will be within normal perameters.