Straight vinegar applied to the glass should loosen it up enough to be just wiped off. Set the tank on it's side an pour the vinegar directly onto the glass with the coralline and let it sit a few hours.
Originally Posted by Bang Guy http:///forum/post/2537908
Straight vinegar applied to the glass should loosen it up enough to be just wiped off. Set the tank on it's side an pour the vinegar directly onto the glass with the coralline and let it sit a few hours.
What he said.
I have found that those old credit cards that are all maxed out from buying the stuff in the tank, makes a great algae scraper. Works on glass and acrylic