TunzeCare Magnet Pico 0220.006 For up to 1/4" Glass

Definitely a nifty little scraper. Love that it has a wider and narrower blade. The Narrower blade is great for detailed work, and is more effective for tough to remove coralline algae. Definitely for smaller tanks though, I can see this struggling with anything beyond 10 gallons because of the thicker glass. Really glad I got this.

I have 5 of these Tunes Magnets in various sizes for different tanks. Have them for saltwater and freshwater tanks. They do a great job at getting off all kinds of algae. Put the metal blade on and even easily take off coralline algae quickly.I do with it was a floating magnet, would keep my hands dry after I drop the wetside into the tank.

We had a larger Tunze magnet. Got the Pico since the aquarium was not that big. Pico magnet keeps on falling off when you turn too fast. Recommend using larger Tunze magnet, otherwise a very good aquarium glass cleaner.

Does a very good job cleaning the inside glass of our aquarium.

This is a great cleaner design, but the magnet is incredibly weak. I would not recommend trying to use this on 1/4" glass. I would use this only on true nano tanks (under 20 gallons and probably even below 15g or 10g) with thin glass. For glass that thin, it would be great, and I use the stronger versions of this on three other tanks I have ranging in size from 30g to 120g+. But it's essential you choose the right size, and this one is not strong enough to handle what the description says as of when I bought it (up to 1/4" glass).

The thickness of my fish tank glass is 6mm, it can adhere to the glass and effectively remove the algae on it. However, it needs to be moved slowly and often accidentally falls off and lies at the bottom of the tank, making it unable to reattach with another part. I have to use a clip to pick it up. If you ask me if it's useful, I think so, but if I were to buy again, I would choose a version with stronger suction power.

Works well, but does not float. While using Fluval Stratum (will stick to the magnet) or other higher iron substrates be careful of trapping substrate and scratch the tank.

This was described as working on up to 1/4 inch glass. Not the case. This is for very small, very thin walled tanks. It did not work at all for my needs. I'll try it on one of my smaller setups and I'm sure it will work just fine, but that's not what I purchased it for.