Thank you for your reply. We found out we were over feeding our fish. We siphoned about half the water out n got most of that junk out. We will do it once a week now to make sure that doesn't happen again. We're very new to the fish life so we aparently have lots to learn. Thank you for your advice! It's greatly appreciated!!!!Cristinna, it's always difficult to make the call from a photo but I will give it a shot. My guess is that the unidentified glob is tank fungus. I suggest do a quick thorough gravel vac and siphon it out. Fungus exists in all aquariums. When fungus becomes visible in a tank, it's taken root on some type of decomposing bio matter.