I am so sorry about your gouramis. They are such beautiful fish, and you really get attached to them if you have them for any length of time. From what you have posted, I really don't have an answer. Could you humor me with some more information? What type of test kit(s) are you using (strips, dry tab, drops)? Can you please post your ammonia, nitrite, and nitrate levels? How often do you change water from the tank? Do you vacuum all of the gravel each time you do a water change? Answers to these questions may be helpful in figuring out what is happening to your fish.
