I just got over the dreadful bout with HIGH NITRITE levels on both tanks and 75% tank water changes daily for a fix on that and my blue Betta, Azul now has a gray fuzzy stuff around his mouth and his "lips" appear swollen. The books say this is Cottonmouth and since I have the "cure" for it - Triple Sulpha Capsules, I decided to start treatment right away. They say it is a colorless powder that disolves easily in the aquarium and can be used with other products. Pish-Posh. I have a layer of cloudy gray undisolved powder on the top of the water. It does not seem to bother Azul, but I have to repeat this process 4 times. Anyone have any ideas how to make it better?