Join Date: Jul 2012
Location: Corpus Christi, Tx
I would bet money the sand you have now will do fine for plants.
Almost any sand works great, play sand included. Just put in some root tabs once every month to month and a half for a bit, then stop and let the plants tell you when it is needed. I would also suggest adding some MTS.
There are many low tech tanks flourishing doing such.
So in short if you like the look of what you have now, chances are it should be fine so no reason to change. Just research the plants before purchasing them and know their needs (above/below substrate, heavy feeders, do better in shade, etc).