Review on Fzone Aluminum Magnesium Alloy Scraper Cleaner with 10 Stainless Steel Blades for Aquarium Fish Plant Reef Tank Glass Cleaning - Extended Head Rotatable up to 26inch by Kelsey Hoss

Better than a magnetic float, this Friend Zone Scraper allows you to precisely remove algae from corners, applying more or less pressure depending on the area you need to clean. Remember to be careful with the corners as you don't want to scratch the silicone holding the glass together. The scraper comes with replaceable blades and one blade lasts long between water changes. Branding in Chinese is a bit strange, but it's the tool that makes the difference. If you search at Revain you will find that this particular instrument is sold at different prices with different brand names, so just buy the cheapest one.