Nov 12, 2025 #1 A Asterios New Member View Badges R2R App User Joined Jul 24, 2025 Messages 18 Reaction score 15 Rating - 0% 0 0 0 Can someone tell me what is this???
Nov 12, 2025 #2 S Subsea 7500 Club Member View Badges R2R App User Rock Pool Reef Keepers Joined Jun 21, 2018 Messages 9,267 Reaction score 12,013 Location Austin, Tx Rating - 0% 0 0 0 Try white light. I see a red line and have no idea. Bump
Nov 12, 2025 #3 StartingATank Self-Diagnosed Coral Addict View Badges R2R App User Pumpkin My Tank Thread Joined Nov 30, 2024 Messages 2,142 Reaction score 1,575 Location DFW Metroplex Rating - 100% 1 0 0 Dont know, but looks like it could be a root system or a crack in the glass. Need a better pic
