Jan 16, 2018 #1 T Teresa272 Aquarium Advice Newbie Joined Jan 16, 2018 Messages 1 Can anyone tell me if this is normal or not . The lighter spot appeared overnight. Attachments 20180116_143533.jpg 121.6 KB · Views: 59
Jan 17, 2018 #2 Delapool AA Member Site Team Joined Feb 7, 2013 Messages 16,731 Location Perth, Australia Think I can see it. Sounds very quick on appearance and thus odd. Had you done anything to tank?