Robuta

https://reeflings.com/species/sargassum-fluitans Gulfweed (Sargassum fluitans) – Complete Care Guide | Reeflings Sargassum fluitans, or Gulfweed, is a floating brown algae that forms habitats in the Sargasso Sea and can be kept in aquarium refugiums. sargassum fluitanscare guidegulfweedcomplete