Removing Coralline Algea from acrylic

[97vmax]

Have a dilemma, my 180 is being overtaken by coralline algae. I've tried Kent pro scrapers, coralline just wears them out. It's pretty thick. I also have an magnet to clean it but my arm is about to fall off trying to get this stuff off. Anyone have any better suggestions for how to get this stuff off acrylic? I'm sure I can't use a razor blade but man am I tempted.

Any help would be appreciated.

Thanks,
Ken

 

[smcnally]

Old credit cards work great.

 

[deadhermitwalkin]

Steve...How about Credit cards that are maxed out from this hobby? I've had plenty of luck with these while my wife bangs my head of the glass. =)

 

[97vmax]

Ok, I'll try the credit cards, only problem is the depth of the tank. Don't think I can get to the bottom without a wetsuit!

 

[smcnally]

Steve...How about Credit cards that are maxed out from this hobby? I've had plenty of luck with these while my wife bangs my head of the glass. =)

That's a great idea! LOL