Jul 24, 2019 #1 O OutsideBrian Active Member View Badges Joined Feb 27, 2014 Messages 480 Reaction score 403 Rating - 0% 0 0 0 I’ve noticed some dark spots starting to grow on my rocks. Any ideas on what it may be?
Jul 24, 2019 #2 F Flippers4pups Fins up since 1993 View Badges Excellence Award Reef Tank 365 Article Contributor Reef Squad Emeritus Hospitality Award Joined Jun 21, 2016 Messages 18,499 Reaction score 60,639 Location Lake Saint Louis, Mo Rating - 0% 0 0 0 Those look to be sponges.
Jul 24, 2019 #3 OP OP O OutsideBrian Active Member View Badges Joined Feb 27, 2014 Messages 480 Reaction score 403 Rating - 0% 0 0 0 Flippers4pups said: Those look to be sponges. Click to expand... They’re super thin kind of like coraline.
Flippers4pups said: Those look to be sponges. Click to expand... They’re super thin kind of like coraline.
Jul 26, 2019 #4 S shopan New Member View Badges Joined Feb 19, 2019 Messages 7 Reaction score 0 Rating - 0% 0 0 0 I also having this dark encrusting spots growing. Noticed alot after increasing the light. Tank is about 5 months old and rock is covered in green coraline. Hopefully someone can help ID this.
I also having this dark encrusting spots growing. Noticed alot after increasing the light. Tank is about 5 months old and rock is covered in green coraline. Hopefully someone can help ID this.