Has anyone used this? My overpriced Waterbox scraper's plastic blade does nothing with calcified algae. This looks like a metal blade with a good attack angle and "could" do the job.
So, I like them - when they work. I've now gone through two of them because, each time, the little plastic peice connecting the blade to the magnet snaps off. They work real well however that seems to be a weak point on them and, each one I've had, has lasted about 6 months before that peice snaps.
@TWYOUNG I use a flipper and it’s been very good on algae and scraping “hard” materials from the glass. What I’ve notices, however, is that it’s not great with whatever film algae I had that accumulated near the sand bed. Ended up using a long scraper similar to what @Rick's Reviews posted.