ISTA Smart Fish Tank (Aquarium) Maintainer/Algae Cleaning tool kit (Scraper, Scrubber and Rubber Scraper) by Bosvision Three useful tools in one package; purchase this tool kit can save your money and effort to buy them one by one. High quality and durable tools to effectively remove algae from your fish tank / aquarium and won't scratch the glass. Extendable Cleaning Rods, it is flexible and long enough to keep you from touching the water. Ergonomic grip for easy operation All parts can float on the waterand the scraper's blade is stainless. This tool kit can be used in saltwater and freshwater.