Add to cart Coral Box Magnet Scraper $53.31 The Coral Box Magnet Scraper easily removes those tough to remove spot algae, coralline algae, and other mineral deposits that can form on your aquarium glass or acrylic. The dual action blade and in tank scrubber makes easy work of any stubborn algae obscuring your view. Size (mm): 110 x 56 x 60 Add to Wishlist