I use the tiger shark cleaner on my 10' long, 3/4" thick acrylic tank.
Why does BRS recommend this? With properly sized magnets and now includes the scraper attachment, Algae Free has made one of the best algae scrapers in the industry. Most of their value is the fact all of them (except the Great White) do float if the connection through the aquarium is lost for...
www.bulkreefsupply.com
It has a strong magnet, but I didn't love the scraper so I took it off. I swap out the white scrubber pad with some white scrubber pad that I bought on amazon. This way it stays clean. Its pretty easy and quick to use.
Definitely stay on top of cleaning the panel. I have a bad habit of letting mine go too long and hard algae and coralline algae starts to grow fast. When that happens I use a plastic credit card of some sort and a plastic scraper. It works great, but you obviously have to get your hands in the tank.
One thing to be careful of is getting sand trapped in your cleaner when you near the bottom. I have a few scratches from this. I now clean the entire panel before I do the last 2 inches at the bottom of the tank so that I dont drag sand all the way up my