May 9, 2020 #1 unitedaf Community Member View Badges Joined Feb 20, 2020 Messages 81 Reaction score 54 Location Colorado Springs, CO Rating - 0% 0 0 0 What are those while hairy things around it?
May 21, 2020 #2 PeaBrain Active Member View Badges Joined Feb 26, 2020 Messages 276 Reaction score 532 Location Columbus Rating - 0% 0 0 0 Feeding tentacles?
May 21, 2020 #3 GSnake Well-Known Member View Badges Joined Aug 6, 2018 Messages 563 Reaction score 243 Location Toronto, ON Rating - 0% 0 0 0 hydroids?
May 22, 2020 #4 MohrReefs Valuable Member View Badges My Tank Thread Joined Feb 29, 2020 Messages 1,136 Reaction score 869 Location Mt Juliet Rating - 0% 0 0 0 Poke it and see what happens.
May 22, 2020 #5 Tahoe61 10K Club member View Badges Excellence Award Moderator Emeritus Joined Mar 2, 2012 Messages 13,239 Reaction score 15,708 Location AZ Rating - 0% 0 0 0 Mesenterial Filaments I believe.
May 22, 2020 #6 vetteguy53081 Well known Member and monster tank lover View Badges Partner Member 2024 Excellence Award Reef Tank 365 RGB Article Contributor Tampa Bay Reef Keepers West Palm Beach Reefer Hospitality Award Ocala Reef Club Member 305 Reef Club Wisco Reefers Midwest Reefer Fish Medic MAC of SW Florida Rock Pool Reef Keepers R2R Secret Santa 2023 My Tank Thread My Aquarium Showcase Joined Aug 11, 2013 Messages 96,707 Reaction score 215,505 Location Wisconsin - Rating - 100% 15 0 0 Old worm tubes often found on rock in sump. You can scrape away with old credit card