When it comes to plants in the Opae Ula tank I'm just not a fan of what's out there. Only really one plant that I have but don't care much for is the macro algae. It's ok but there's really not much to it. I just recently was given some Salvinia minima for my FW shrimp tanks. Just so happens that I needed more info and here's what I found. My salinity is around 1.008 to 1.010. Not sure if it will survive in there. Maybe I'll try.
Salvinia minima commonly grows on the surface of still or slow-moving freshwater areas, such as lakes, ponds, and canals. It can tolerate water salinity of up to 4 to 7 parts per thousand (ppt) (or 1.003-1.007 SG) and also inhabits brackish water, including swamps, marshes, and wetlands. This species can also be found in backyard ponds and private lakes and can be purchased in states where it is not prohibited as a noxious plant.
Salvinia minima commonly grows on the surface of still or slow-moving freshwater areas, such as lakes, ponds, and canals. It can tolerate water salinity of up to 4 to 7 parts per thousand (ppt) (or 1.003-1.007 SG) and also inhabits brackish water, including swamps, marshes, and wetlands. This species can also be found in backyard ponds and private lakes and can be purchased in states where it is not prohibited as a noxious plant.