When I was taking out my filter pad to put in some freshwater fungus medicine, then I saw tiny orange worm things in the extra water in the filter. I also saw even smaller bug looking things swimming around in the water. There are tons of them! I also have a plastic cup with a snail in it (dont ask why) and the bug things are invading it too! In my tank I have two bala sharks that are sick. Im not sure what they have but it almost looks like their scales are coming off in patches. The sharks are hardly swimming anymore. Could the bugs or worm things be affecting my fish and what are they??