@Mr Gharial MBA adding a few firsts to their record with these guys! To my knowledge they used the same system they used to breed Comb Jellies since it had the adequate flow and they were able to keep the broodstock. Now they're the only Aquarium to have cultured them and are the only to keep this Species. I think Okinawa kept a Christmas Tree Siphonophore a while ago but I don't think it was very successful. But that's the only other place I can think of that's tried Siphonophores
All the ones on display were cultured by the Jelly Team which is extremely cool. I think this Generation is either F2 or F3 which is really exciting