Aug 30, 2024 #1 R Ra7deepan New Member View Badges Joined May 23, 2024 Messages 16 Reaction score 0 Location India Rating - 0% 0 0 0 What is this dark green spot?
Aug 30, 2024 #2 GT3000XX Active Member View Badges Joined Dec 11, 2022 Messages 120 Reaction score 119 Location USA Rating - 0% 0 0 0 Looks like algae........