:squigglemouth:Hey everyone I need some suggestions.For those of you who have been here have seen my 210gal acrylic tank.Normal cleanig is no problem but I have a situation I need help with.Here goes getting coraline off front pane of acrylic without scratching.I have some large spots I would like to get off.I have used standard mag cleaner,acrylic scratch pads but none have removed the stuburn coraline.


