scraping acrylic aquariums

[Kate Breimayer <kate@munat.com>]

Hi,
I bought a "Mag-Float" scraper for my new acrylic aquarium and noticed 
it says "Glass only" all over it... what do people use to scrape acrylic 
tanks? Mine is getting overgrown quickly with a fine fur of the green 
stuff so I need to tackle it before it gets out of hand. All I see 
online is long handled plastic things that in my experience don't work 
and snap if you scrub too hard... is there a fabric I can put between 
the magnet scraper and the acrylic that will be safe? I always used the 
Mag float before I knew better on my Eclipse 6 which is now I see 
faintly scratched all over the place...
Kate B
Oly WA
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