I have tried them all, magna scraper, mag float, mag float scrape and the smaller version of flipper. This is by far the best product. It scrapes coralline algae without effort. It is large 6.5x3, and recommend it on large tanks. Worth the money.

I've been in this hobby for more than a decade and this product is by far one of the best purchases I have ever made. Buy it now! You will be happy you did.

Let me just say that this thing works perfectly. I'm usually very worried about scratching the glass with sand with other scrappers, but this one eliminates that fear. Not only that, but I only need to do 2-3 scraps to eliminate that pesky coraline algae. Otherwise it takes 1 pass to remove all other kinds of algae and makes for keep the glass clean a breeze.

Made easy work of the coralline build up on my glass. Works as well as I could have expected.

Throw out all other glass cleaning magnets and long handled scrapers. Or save money and buy this one from the get go if starting out in the hobby. I wish this product was available 13 years ago when I first set up my tank. I would not have the handful of scratches from my old cleaning practices. I can not comment on the effectiveness on acrylic tanks as mine is glass.

I have a saltwater bow front tank. And as all of you bow front users know, getting a scraper of any sort for this kind of aquarium is impossivle, nothing is shaped for it, except for this thing. The scraper works like magic on my bow front. usually I had to detach a scraper from the long arms of other scrapers and put my hand in the tank. But that's not needed anymore. This thing is a must have, I know the price is steep but you won't regret it.

The Flipper algae cleaner is AMAZING!
My previous run-of-the-mill magnetic cleaner and wand-style steel-bladed scraper made cleaning my glass a chore. This all changed after using the Flipper algae cleaner. I received it in the morning, placed it in the tank and 5 minutes later my glass was clean. I used the stainless steel blade on my glass and the plastic scrapper on my plastic overflow. DONE. IT WORKS.

The Flipper scraper is fantastic! It's worth the investment! The flipping function is a nice touch. It allowed me to easily switch between the scraper and scrubber without getting my hands wet while scraping through coralline algae with ease. The two rubber balls greatly reduce the chances of sand scratching your glass while putting more force on the blade to remove any algae on the glass. I recommend Flipper to anyone with an aquarium.