The mangroves are all in riparium planters, which is the easiest way to keep them. I currently have them all in either freshwater, or lower specific gravity brackish, so depending upon how salty your setup is they would need gradual acclimation periods.
I would keep the leather fern at lower specific gravity. When setting this tank I actually killed off a couple of black mangroves while upping the salt too fast, but surprisingly the leather fern was unaffected, so it's a pretty tough plant.
It's too bad I don't have any extra
Pandanus tectorius left. That is another really cool plant and grows well in brackish too. I have a couple of them going in this tank, but I want to hang onto them.
P. tectorius grows these awesome stilt roots...
Yeah I would be interested to get some of those
marmoratus if you might have extra in a couple of months.