Is all algae bad for a saltwater tank? Now that my current tank is finished cycling and the brown algae is pretty much gone, I'm getting a lot of green algae which I assume comes from the high output of my lights? I'm just wondering how you all take care of your algae and if you think I should start scraping it off the glass, rocks and crushed coral I have. Someone told me that green algae is actually good for the tank but I'm not sure. Thank you!