Dec 28, 2025 #1 Brassai New Member View Badges R2R App User Joined Dec 26, 2025 Messages 1 Reaction score 0 Rating - 0% 0 0 0 New to the industry, have a aquired a very established system with live rock. Noticed this hairy worm looking growth. Is this a concern for the tank?
New to the industry, have a aquired a very established system with live rock. Noticed this hairy worm looking growth. Is this a concern for the tank?
Dec 28, 2025 #2 ISpeakForTheSeas 7500 Club Member View Badges Excellence Award R2R App User Joined Nov 22, 2021 Messages 9,401 Reaction score 10,802 Location United States Rating - 0% 0 0 0 Welcome to Reef2Reef! That's most likely a feather duster worm - a harmless filter-feeder.