May 12, 2016 #1 V VinFox716 New Member View Badges Joined May 14, 2015 Messages 17 Reaction score 3 Rating - 0% 0 0 0 Found this circular depression today not sure what it is. Any Ideas? Should I be concerned?
May 14, 2016 #2 TUSI 2500 Club Member View Badges Excellence Award Reef Tank 365 Reef Of The Month Photo of the Month Reef Squad Emeritus My Tank Thread Joined Oct 6, 2013 Messages 2,756 Reaction score 3,683 Location GARDEN CITY NY Rating - 100% 1 0 0 I don't think you should be concerned, it looks beautyfull and happy