Fritz Aquatics Mardel Copper Safe Treats, 1-Gallon

STRONG MAGNETIC : Made of strong rare earth magnet, durable and convenient. Stronger and more powerful magnetic force. Just move the outer magnet, the inside magnet follows, cleaning the floating algae faster and easier. Suitable for fish tanks with thickness of 1/4 "~3/8 " FLOATING DESIGN: The internal floating avoids the brush sinking in the bottom of aquarium. It floats in water and never sinks to the bottom of the tank if separating, makes it convenient to take it out of the tank ALGAE SCRAPER: Install a sharp blade as algae scraper in the head of the brush, which easily removes stubborn marks, even if around corners. The inside anti-scratch cleaning pads cleans fast and efficiently without scratching the aquarium glass

【3 in 1 Function】: ① Dirt Suction. Gravel Vacuum for Aquarium equipped with a duckbill suction inlet accessory, and it is easy to suck the feces away. ② Sand Washing. Aquarium siphon with 3D Filter Basket Net, protect your love fish and small gravel from suck out of the aquarium. ③ Water Changing. Built-in dual airbags, atmospheric cavity, good resilience, effortless operation. 【Working Principle】: hygger's unique patented design --- equipped with a handle type manual press, which has more operating space and saves labor and brings convenience, by testing the fastest speed is to press 7 times. Sand Washer has 2 thickened airbags inside, which can pump water quickly. And using PP ABS materials, resistance to extrusion, do not worry about airbag damage and leakage, can be used for a long time. 【Easy to Use】: Push the siphon switch of the aquarium siphon vacuum cleaner several times, and make sure that the inlet tube part is full of water, and then observe the outlet hose. After the water continuously flows out, you can stop push and observe whether it will automatically. If not, continue to operate until the water will flow out quickly and automatically. The sand can move up and down in the extension tube to remove debris from your aquarium.