Pets Pal Magnetic Aquarium Fish Tank Glass Algae Glass and Acrylic Cleaner Scrubber Floating Clean Brush

I have a child that likes to 'help' clean the tank. It's good for her to learn, but she has a tendency to move too quickly, and with the old algae glass cleaner we had, it resulted in putting my arm into the tank with a very hostile oscar to fish it out. THIS has solved the problem. I bought the large for my 120-gallon tank, and it works flawlessly. The algae is removed, and every now and then I need to retrieve the floating inner part if it becomes disconnected. The wide grip makes cleaning so much easier, as well, with less disturbance for the fish, and a faster job for me.I have nothing negative to say about this product, it has helped me greatly when it comes to maintaining the tank, and now when my daughter has an 'Oops, it fell off, Daddy' moment, I am not upsetting my fish by jamming my arm in there.

excellent especially if you have a large tank