We recently lost a betta to a fungus. I sanitized his tank & equipment, but neglected to do the nets I had used with him. Yesterday, in our 37-gal community tank, we have found a serpae tetra with a white cottony-looking spot on the side of his head, so we moved him to a separate container. Today at lunch, he had died and we saw 2 red wags in the big tank starting to get white places on their fins. Have I transferred the fungus to the larger tank via the nets? Can the entire tank be treated at one time safely? without harming the plants (heavily planted)? Also have a shrimp, 2 crabs & quite a few other fish. Are they all in danger of gettng this fungus now?
I hope someone can help (woeisme?) as we do not want to
loose them all. We just did a 50% water change day before yesterday, it's testing OK.
Thanks in advance.