Jan 1, 2014 #1 FishyUser Aquarium Advice Activist Joined Oct 27, 2013 Messages 111 I need help, I have been seeing some white stuff appear on my acans and I don't know what it is. Attachments ForumRunner_20140101_231057.jpg 24.7 KB · Views: 92 ForumRunner_20140101_231106.jpg 28.8 KB · Views: 73 ForumRunner_20140101_231112.jpg 20.6 KB · Views: 134