Razor Marine, 250mlAdd Brightwells Razor Marine to your maintenance routine and spend less time struggling to remove stubborn buildup from your rocks and glass. Razor Marine is part of a long term strategy to reduce stubborn deposits on rocks and glass. Over time the suspended polymers in Razor will loosen accumulations and inhibit future deposits from attaching to surfaces, making scraping and vacuuming easier and more effective. The polymers also act as a flocculant,