Oct 21, 2021 #1 Agsellers04 Active Member View Badges Joined Mar 13, 2020 Messages 283 Reaction score 287 Location DFW Rating - 0% 0 0 0 What is this stuff growing in my sump? Never have seen it before.
Oct 21, 2021 #2 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 It’s poriferan sponge You can trim away or expose to air to control it