JBL Floaty II S is a algae magnet aquarium glass cleaner which is swimming, not sinking for aquarium glasses up to 6 mm thickness. No need to fish around in the aquarium if the inner part of the magnet accidentally comes apart from the outer part.https://www.aquaristikshop.com/aquaristic/JBL-Floaty-II-S/128600/
- Vemund J. wrote about JBL Floaty II S in 2016:
As algea magnets go, this is a very practical model with its protruding lip that cleans behind equipment and plants. The two angled edges protects the silicone when cleaning close to the corners.