White material on glass

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dubosegriffin

Aquarium Advice Apprentice
Joined
Jan 7, 2011
Messages
15
Location
Mount Pleasant, SC
I had some coraline algae that grew on my glass. I scraped it off but there is still a white residue that I cannot seem to get off. What is this and any suggestions on how to "get it gone?" Thank you!
 
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