I am keeping a true marine plant. It is a species that spread runners and resembles a wide leaf (but short in height)
FW Vallisnera americana.
Its scientific name is Thalassia testudinum, common name Turtle Grass. I lost the battery charger of my camera so for the moment I took this pics with my cell.
The first pic shows one plant with the rhyzome out (for illustration purposes).
These are adapting to my tank, planted in the deep sand bed substrate (aragonite reef sand, 6"). They seem to do best in mild current or somewhat quiet spots.
Pepetj
Santo Domingo