As you might know, I got a goldfish a while ago aropund 6-8 inches. I've been trying to take care of it but he's not looking so well still. Today I look into the tank, and there are a lot of white stuff on the ground of the tank. What is this white stuff, should I be worried. They look like fluffy long white things. um...looks like maggot size fluffy white things. I have no clue what it is.