I have a acrylic mag float which works good on algae film but I have noticed some tuff algae that just won't come off.. I have a jbj aquascraper http://www.bulkreefsupply.com/jbj-aquascraper-kit-4-in-1-cleaning-kit.html
But still won't come off I think I need a razor blade or something but don't want to scratch anything.. what do you guys use?:rollface:
But still won't come off I think I need a razor blade or something but don't want to scratch anything.. what do you guys use?:rollface:

