This Easy Blade is unbelievable, I ordered one, based on a couple of reviews, I was very very skeptical.
I got mine yesterday, glued it to my mag float last night, and then decided to try it today. My tank is a 220 and see through on all 4 sides, it usually takes me a couple of hours, to clean my tank. Not to count the rocks I usually knock over and the drips of water all over the outside glass and floor.
I am so happy, it took probably about an hour and I had some hard coralline growth in the corners, it took it right out. My family says the tank looks almost as clean as the day I got it. I take my hat off to whoever invented it, it is really a life saver. Great job