What are these tubes? Hard to get a good picture of them but they are all through the tank. Is it something to worry about and if so what is the management protocol for them? Thanks.
For clarification here, what tubes are you specifically asking about?
Pics under white light may be helpful for a solid ID here, as the bluish coloration really washes out a lot of the detail.
That said, I see some tube-shaped tentacles in the top left (possibly from harmless/beneficial Spaghetti Worms - taxonomic family Terrbellidae), and I think I see some Vermetid Snail tubes around the middle of the pic (most people suggest removing Vermetids, as some species can reportedly irritate corals with their mucus webs). Feather Duster Worms also build tubes that can sometimes look like Vermetid tubes, though, and Feather Dusters are harmless/beneficial, so, again, pics under decently bright white light may be helpful - that said, if the tubes have a spiral at the base, it’s a pretty safe bet that they’re Vermetid Snail tubes; if the tubes don’t have a spiral, they’re probably Feather Duster tubes.