I have a 12 gallon eclipse tank with 2 young clown loaches in it. They are about 1.5 to 2 inches long. They have been living in it for about 2 weeks now. A few days go I added some aquarium salt to my tank to prevent any fungii and diseases. Unfortunately, my loaches seem to be very sensitive to it. There are some indentations their where they appear to be burned. There is no bleeding. When I first added my loaches to the tank, I had a male betta in the tank, but took him out after a few days because the loaches were nipping his tail. Could it be possible that my betta attacked my loaches, or is the salt poisonous to the loaches? I appreciate any comments and reponses! Thanks!