Nov 5, 2020 #1 S scubadiver12 New Member View Badges Joined Dec 3, 2019 Messages 3 Reaction score 1 Rating - 0% 0 0 0 Can anyone tell me what this black dust is
Nov 6, 2020 #2 lapin 10K Club member View Badges Reef Squad Excellence Award Hospitality Award Joined Dec 16, 2017 Messages 10,876 Reaction score 18,041 Location Austin Rating - 0% 0 0 0 To me this looks like the growing pattern of cyano bacteria on the glass.
Nov 6, 2020 #3 OP OP S scubadiver12 New Member View Badges Joined Dec 3, 2019 Messages 3 Reaction score 1 Rating - 0% 0 0 0 When I clean glass it goes on the sand then a couple of days later it’s back on glass it’s red on sand but looks black on glass any ideas
When I clean glass it goes on the sand then a couple of days later it’s back on glass it’s red on sand but looks black on glass any ideas
Nov 6, 2020 #4 harley32907 Valuable Member View Badges Hospitality Award Joined Dec 14, 2019 Messages 1,468 Reaction score 11,510 Location Daytona Beach Fl. Rating - 0% 0 0 0 +1 for cyano
