Review on Reegugu Aquarium Magnetic Cleaning Scrubber by Ashton Dahmer

I've never seen a stronger magnet. Be careful not to get your fingers between the two parts! THEY clap together. As for aquarium cleaning, great for glass. I have a planted tank and the algae eaters can't get to everything, so I have to scrape the front glass regularly. That works great. It's like velcro but stiffer. The display/scraper part goes inside, the handle goes outside the glass. The magnet is so strong that they hit each other, be careful! I used glass cleaner. It comes with a plastic scraper for the acrylic tank. It was a bit awkward at first because I was used to using a sponge. I also thought I could clean without getting my hands wet, but that's not the case. I still had to fish it out when I was done. I use this in 10 gallons - it's a bit big. You may need a smaller version for a small tank. Works well overall but to be honest the magnet was intimidating. Don't let small children do this. Also NULL statements. Deducting a star for lack of warnings and instructions.