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 9,428 Reaction score 12,228 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 2,291 Reaction score 1,690 Location DFW Metroplex What state or country do you live in Texas 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