Aug 12, 2018 #1 H Hanfam1111 Community Member View Badges Joined May 20, 2018 Messages 60 Reaction score 40 Rating - 0% 0 0 0 Installed a UV and it has eradicated all GHA and other nuisance algae but this remains. Anyone know what it is?
Installed a UV and it has eradicated all GHA and other nuisance algae but this remains. Anyone know what it is?
Aug 12, 2018 #2 James M . View Badges Excellence Award Reef Tank 365 Joined Jul 6, 2018 Messages 9,265 Reaction score 12,822 Rating - 0% 0 0 0 If your referring to the blue spot it’s a blue sponge
