any corals or alagea that can live in brackish and also i will have a 7" long freshwater moray, a 4-5" mangrove jack,2 3-4" monos,7 crabsfiddler,red claw and coata rican land inbetween 3-4" in diamater i will also have a 3-4" long freshwater lionfish my tank dimensoins will be17"wide,25"tall and 46-47" long and a third of the tank will be land it will be a mangrove swamp biotope with living mangrove shoots it will have a almost beach affect were the sand is flat on the bottom and then slopes up to the land part of the tank my crabs will be hangin out on the mangrove roots and rocks or on the beach so they should get along with each other and i will have a pvc pipe for my eel but is their any alage or coral i could put in their