My betta apparently came in with it and that was on the first of December 2015. He had a grey patch above one eye that I thought was discoloration. Well, in the last couple of weeks it's gotten fluffy and now I noticed a patch on the nose of one of my other bettas. I've ruled pretty much everything except the slow-growing columnaris out. I started with Seachem Paraguard since I wasn't sure what he had. The patch when from whitish back to grey, but it's not gone so its time to call in the Calvary, especially as my other boy has it now. I called Seachem and they recommended Focus (nitrofurantoin) and Kanaplex in equal amounts in the food. Okaaay. Théoden will probably eat almost anything if he's hungry. Elsa (he's a male - don't ask) is incredibly fussy and demands frozen red worms and brine shrimp and even then spits half of it out. I'm worried about Elsa's tank mates eating medicated food. Seachem warned me not to give it to the shrimp and snails and Elsa has a lot of snails and a few shrimp as he's very peaceful. I'm not sure it's a good idea to put them into another tank in case they are carrying the disease and my quarantine tank is full at the moment. The shrimp are a couple of amano and ghosts. But the snails are lovely ivory mysteries and some horned nerites as well as a lot of adorable little bladder snails. I could replace the shrimp but I'd hate to kill my beautiful snails. Does anyone have any suggestions?