Ny fish are doing well, but on the dorsal fins of one of my silver mollies, and on the black molly there is something brown growing on it. It is just along the outer edge. It is a new tank, bout 1-2 weeks old. I am wondering what it is and if I should be concerned. Yesterday I did a 2-3 gallon change of the water. I add prime and am adding stresszyme as the instructions say I should. The fish seem healthy and all of the readings except ammonia are good. The ammonia is high, but I guess that is expected with a new tank. Is there anyone out there that might have some insight. Thanks in advance.
Dan
Dan
