Originally Posted by WONDERKillie
@BuckyKattLove, just remember that things like a treatment should be a last resort. I had a really bad ick outbreak when I put in my blue rem. He seemed fine at the store, no signs of ick at all. However, he ended up dying...the rest of my tank is fine with no more ick.
You should treat the rest of the tank. fish can carry the parasite without showing spots. It's when they are stressed that the parasite gets the upper hand and spreads all over the fish.
Treatment should not be a last resort. That's how fish die - people wait till it's too late. Certain diseases must be treated a soon as they can be identified, and columnaris is definitely one of them. Ich is another.