Coraline algae on acrylic

[reefme]

What is the best way to remove coraline algae on acrylic tank?

[Leah]

Mag float makes them for acrylic tanks too.

[reefme]

Mag float makes them for acrylic tanks too.

Seem like mag float makes slight scratches.
Do you know any creatures doing a good job eating coraline algae?

[Myka]

Urchins eat coralline algae, but not enough to keep the glass totally clean. I find most tools designed to clean acrylic tanks suck at their job. The Kent scrapers with the plastic blades suck. I tried one on my glass tank and the plastic blade doesn't seem to be flat enough because it won't even clear the soft film off the glass in a clean sweep. I have the long handled Kent scraper, maybe with a short handled one a person could apply more pressure and have it work better...?

[fencer]

CDN Tire had a ceramic scraper...it was for stove tops