Okay, I went on vacation and came home to a bunch of brown algae growing on the sides of my tank, Its covering my live plants, and its covering all my decorations. My tank is brown. Its not fuzzy or anything, its just flat. I have a 10 gallon tank. Is this good or bad, because its not pretty and im worried about my fish. This is my first tank it has been running for about 2 and a half months.