Mag Float, Floating Magnetic Aquarium Cleaner - Glass, Small (30 Gallons)Product Description Mag Float Nano Glass Aquarium Cleaner for Curved Edges aquariums up to 3 16 or 5mm. Product Benefits Ingredients Suggestions Use Instructions: Clean outside aquarium surface thoroughly before each use. Remove all debris from Mag Float prior to each use. Do not use Mag Float above waterline or on dry surface. Keep Mag Float away from the gravel line and glass aquarium sealant. The magnet part with logo Mag Float is placed on the