Fish Fan 寫:
You know the reason - you have overdozed the tank!!! For the time being, don't add any more fish. Otherwise, they'll die soon. You should keep changing water to dilute the Excel. You'd better allow some time (at least 2 weeks or even a month) for the bacteria purifying system to resume normal. BTW, how large is your tank and how much Excel did you doze?
The width of my tank is 24 inch. Probably I added 180ml of Excel in one and half month. Now I keep changing 1/3 water twice a week. What is the process of bacteria purifying? What should I do for it? Should I add any sulfur bacteria?
Thanks C Hing!