Before my upgrade my 55 gal. Tank started to have this hairy look all over the rocks and also the back of the tank. Idk why and then i realized my fish had ick. Idk if the ick did this to the tank or was it something else but i wanted to try n figure it out so I can prevent this frm ever happening again.
I should of taken a better pic but the hairy thing thts on tht rock was basically all over my tank. Any idea what must of caused this please?


