So this might sound dumb, but I barely get any algae at all in my 55 gallon tank. I can go weeks without cleaned the glass and then I'll only get a few specks. Is this a bad sign? I have one nerite snail now, but even before I had him it was the same. I know everyone hates algae and it's a pain to keep away for most, but I'm wondering why I dont really have any at all?