Mine has been in my tank for a good 5-6 months solid as well. I'm too lazy to take it out of the tank so I just keep it in there all the time. I just flipped my blade over last weekend. Now it's like a brand new scraper again !
Interesting that some people complain about the magnet not being strong enough. I wonder if that's just a problem with the smaller one ? I have the larger one and never thought that the magnet wasn't strong enough for my glass. I did have to do a couple of minor mods on mine though.
1. I lined the sides of my handle with rubber so that I could grip it easier. Pinching the sides of the plastic was annoying as my fingers often slipped. I probably have weak fingers. With rubber glued to the sides I don't have to grip with my fingers as hard. Having to do this is partly due to the strength of the magnet I thought.
2. I had to replace the felt on mine as they started to wear out. If you ever need to do this be careful to get the appropriate felt pad thickness. I first used standard felt pads I had laying around the house that I used for under chairs and furniture. These were way too thick as I noticed loss in strength due to the added thickness/separation between the two magnets. I eventually found much thinner gray felt pads at Superstore in their housewares section.
Still very happy with my scraper !
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