One thing I would suggest with a brackish tank is to try to keep the water as lightly salty as you can. With that setup that I had I experienced some trouble losing a few mangrove trees because it was apparently too saline, even though I tried to slowly raise the salinity. I removed some of the salt by doing all of my water changes with just 2 tablespoons marine salt per 5-gallon pail. I'm not sure what specific gravity this yields (?), but the brackish fish that I still have in there (Cyprinidon variegatus
) still seem very healthy with this less salty water.
Another really weird brackish plant that I am trying to find is the aroid Montrichardia arborescens
. This is not an easy to find plant and definitely a collector's item.
Wikimedia Commons image... http://en.wikipedia.org/wiki/File:Mo...-_Suriname.jpg