Coralline algae on acrylic?

[z28pwr]

Our tank is 36" deep and I use a Magnavore 10 magnet and the Kent Aqua Scraper with acrylic safe blades (3 different lengths) and it works well if you do it a couple times a week, but if you wait too long like I do it becomes a PITA to get the coraline off the acrylic. I normally do a little at a time, but it kills my CTS so I give my step son $20 dollars to scrape it off for me. You wanna borrow him? ;)

I'm waiting for the larger Mag Flip to become availabe to give it a try.