I've seen plenty of pictures of numerous tanks and have visited people with some pristine tanks and I want to know what you do to keep your glass so clean and free of algae. Even when the corals are too close to the glass to clean them with a hand scraper, the glass still seems to be so clean. So how do you keep your glass clean? I use a magnetic scraper, have turbos and still can't seem to get that pristine glass I always see.