This Natural Reef Habitats Softies Donut which is shaped like a donut is ideal for holding softies such as xenia, cespitularia, sarcophyton, nepthia, capnella, discoma/mushrooms/ricordia, zoanthids/palys and many more types of softies. Each donut has enough space to hold and allow sufficient water flow to keep your corals in one place. Keep your aquarium display beautiful and keeps your corals in one place. No more falling coral or spending money on epoxy to jury rig some kind of mount that eventually keels over and destroys your prized specimens. Just one Natural Reef Habitats product can pay for itself many times over. Fish have great difficulty “nosing” the corals over like they do with frags on egg crates. Natural Reef Habitats are ideal for for coral light acclimation or aesthetic frag display in a home aquarium. Simply have multiple Natural Reef Habitats product in your tank at different heights and move your frags as they acclimate without fear of them getting loose, falling out or “disappearing” – those who know, know what we are speaking about.