I've had fish tanks since I was a kid, which is over 50 years now. I have a bit of experience in regards to maintaining fish tanks!!! ;) I've had freshwater (FW) brackish, and saltwater (SW) tanks. At one period of time, I had a basement full of saltwater tanks.
With all that said, over the years I've had probably close to a dozen different types of glass cleaners/algae removers that were 2-piece designs with magnets (and ones with blades/brushes/scrubbers on sticks too). For the 2-piece magnetic ones I've used all of the big name brands, and the most popular ones. I've had ones that used scrubby pads similar to Scotch-Brite. Some that used something similar to velcro. Some that were hybrids, using both a pad and a clip-on metal blade of sorts. Some that used straight-edge razor blades, and some that used 2 injector style razor blades that sat perpendicular to the glass. That last style was the best of the bunch back in the day in regards to removing tough FW algae, and SW coralline algae. Only problem was that in FW, the blades needed frequent replacement, and in SW they needed even more frequent changes as they would start rusting from day one! All of these mentioned styles also had the ability to pick up sand and gravel from the substrate if you weren't careful enough and went too low in the tank, or if they were of the variety that didn't float (or if they got detached from each other) and you could easily scratch your glass with whatever you picked up from the bottom, or if the pad fell to the bottom and something stuck to it.
Now to the Tunze Care Magnet Nano. I decided to try it as i've seen some glowing reviews. It's a bit expensive compared to some other (although there are other niche brands that cost 2 to 3 times as much too). I figured I'd try it and use Amazon's return service if it didn't pan out. I have returned a few of the cheap glass cleaners that are all over Amazon, as 99% just didn't do even an OK job.
The Tunze Nano is currently being used in a 5 gallon, and a 14 gallon BioCube tank (yes, I've cut back on my tanks over the past few years). This smallest Tunze has magnets that are perfectly suited for the job. They have tremendous attraction, but not too strong that they continually jerk their way across the glass. The plastic glass scrapers on the Tunze which I had little faith in before purchase have turned out to do a phenomenal job! They actually clean the glass off, removing the algae in a continuous sheet (reminds me of a meat slicer in a deli). While other cleaners disperse the scraped algae back into your water column, the Tunze kind of rolls it in to a cylinder that you can either totally remove, or let it sit on the bottom for your algae eaters to eat. It cleans the glass as well as if not better than a razor blade, but doesn't rust or crumble over time. If you accidentally or purposely go into your gravel, it won't pick any of it up due to its design, so it won't scratch your glass. A plus to the Tunze over others is that the blades can go deep into corners near your silicone, scraping right up to the sealant, but without disturbing it. You can't do that with fuzzy or velcro types, and you need to be extremely careful near your sealant seams if you use razor blades. And probably the biggest plus for the Tunze is for use in a tank like a BioCube that has curved glass across the front and rounded, seamless corners. Due to it resting solely upon the 2 blades, it contacts the curved glass just as good as ifit were flat glass. I can get it to easily clean the entire "corner" by doing half from the front, and then do the rest from the side glass. Basically it gets the whole entire corner, where other cleaners cannot! On square tanks, The magnets are strong enough that as you go from one glass panel to the next one, the cleaner just easily snaps over to the next piece of glass, but not so hard where you're afraid of breaking the glass as it switches over to the next piece of glass. As you can no doubt tell from the above, I'm a big fan!
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Reviews with images
BEST SCRAPER EVER!!!!!
I have to admit that I rarely do written reviews, unless something is truly awful. But this thing is SO F’ING AMAZING, I had to write one.Anyway, I was skeptical of a plastic blade working so well, as I’ve always used a hygger with the metal scraper and hard velcro, which is a solid scraper itself, but so bulky and impossible to get into the books and crannies, especially where any rock work or corals are close to the glass. So I decided to give this little thing a try, and I’m blown away!! I do wish it floated when connection between magnets is lost. Hopefully they can figure out a way to add that little feature one day. But, it’s nbd really, cuz I just use my extra long tongs to grab it back if/when that happens. And, it glides so nicely with such a strong magnet that it’s VERY rare for it to come apart. Anyway, all in all? This is the best magnet I’ve ever used/owned.
Top reviews from the United States
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Reviewed in the United States on September 19, 2022
Reviewed in the United States on September 8, 2021
Very glad I bought this product. It works exactly as advertised & it's apparent as soon as you take it out of the box that it's well-constructed. Likewise, as soon as you read & follow the instructions & use the Tunze Care Nano, it's apparent it's well designed. For my purposes, it's pretty much perfect - I recently purchased a new light that revealed there was a good bit of white algae building up on the glass in my tank.
On my first use, it took me about 12 minutes to clean 3 sides of the tank. I started on the front, which is curved. Not a problem at all; I used an up&down motion & it came right off. Care Nano definitely does work on curved glass (woo-hoo!).
No problem w/ corners, either; there's a vid on YouTube that shows the technique, but there's really nothing to it. Just come to a stop against the corner & slide the handle around w/ a steady motion & the scraper side follows. It's no hype -magnet is REALLY strong.
I also found it not such a big flaw that it doesn't float. The one time I dropped it, I just quickly caught up w/ the scraper side & it re-attached itself to the handle. It's also unobtrusive hanging in the tank. Have mine in the corner by the filter, as shown.
On my first use, it took me about 12 minutes to clean 3 sides of the tank. I started on the front, which is curved. Not a problem at all; I used an up&down motion & it came right off. Care Nano definitely does work on curved glass (woo-hoo!).
No problem w/ corners, either; there's a vid on YouTube that shows the technique, but there's really nothing to it. Just come to a stop against the corner & slide the handle around w/ a steady motion & the scraper side follows. It's no hype -magnet is REALLY strong.
I also found it not such a big flaw that it doesn't float. The one time I dropped it, I just quickly caught up w/ the scraper side & it re-attached itself to the handle. It's also unobtrusive hanging in the tank. Have mine in the corner by the filter, as shown.
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Reviewed in the United States on December 16, 2022
Reviewed in the United States on March 13, 2018
Reviewed in the United States on March 18, 2023
I have to admit that I rarely do written reviews, unless something is truly awful. But this thing is SO F’ING AMAZING, I had to write one.
Anyway, I was skeptical of a plastic blade working so well, as I’ve always used a hygger with the metal scraper and hard velcro, which is a solid scraper itself, but so bulky and impossible to get into the books and crannies, especially where any rock work or corals are close to the glass. So I decided to give this little thing a try, and I’m blown away!! I do wish it floated when connection between magnets is lost. Hopefully they can figure out a way to add that little feature one day. But, it’s nbd really, cuz I just use my extra long tongs to grab it back if/when that happens. And, it glides so nicely with such a strong magnet that it’s VERY rare for it to come apart. Anyway, all in all? This is the best magnet I’ve ever used/owned.
Anyway, I was skeptical of a plastic blade working so well, as I’ve always used a hygger with the metal scraper and hard velcro, which is a solid scraper itself, but so bulky and impossible to get into the books and crannies, especially where any rock work or corals are close to the glass. So I decided to give this little thing a try, and I’m blown away!! I do wish it floated when connection between magnets is lost. Hopefully they can figure out a way to add that little feature one day. But, it’s nbd really, cuz I just use my extra long tongs to grab it back if/when that happens. And, it glides so nicely with such a strong magnet that it’s VERY rare for it to come apart. Anyway, all in all? This is the best magnet I’ve ever used/owned.
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Reviewed in the United States on October 27, 2023
Packaging concern
Reviewed in the United States on October 27, 2023
Pricey item but the packaging is poor. Good thing the item was not damaged.
Reviewed in the United States on October 27, 2023
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Top reviews from other countries
NeptuneVII
awesome
Reviewed in Singapore on May 18, 2022
NeptuneVII
Reviewed in Singapore on May 18, 2022
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