Actually what I have is lucky bamboo, it's a little different than what you have. The kind in the yard will do even better. Just cut it, rinse well and plant. Can you get a few roots with a small piece? Watch for it to rot as it does different in all tanks.
Sure you can have a pic
This is a ten gallon with play sand. You can't really see the bamboo for all the other stuff growing.
The next is over the top of the tank.
The two short ones to the right are growing in the filter.
Wow, that really shows the tenacity of bamboo. We had some in a small bit of the yard and it's just exploded in this southern humidity and heat. But to seed itself and grow out of your filter...! That's cool.
Actually they didn't seed themselves. They are just shorter pieces of bamboo that I've put in the filter to grow. I keep plants in several filters, they use some of the nutrients in the water circulating over their roots and help keep the tanks cleaner.
No I don't have to rinse the filters with plants in them near as often. the plants love the gunk and use it to grow. when I rinse it I just pull plant and filter media out rinse them in used tank water as usual and plunk plants and media back in until the next time it needs to be cleaned.
Yes you sure can use play sand in an aquarium. I really like the pool filter sand better, it's not as fine as play sand.
the problem with sand of any kind is having it pack and form anerobic air pockets. You have to stir it about once a month by hand or keep snails(preferably malasian Trumpet snails) to keep the sand loose and aereated.
I use MTS in all my sand tanks and have never had a problem.
I stir every once in a while ever since I read about the air pockets. When I didn't have any plants, it wasn't a problem. Now that I'm trying to "aquascape", my stirring has to be extremely pinpointed. lol
Your plant roots will also help keep the sand aereated. In the sand tank with lots of plants I would stick a drinking straw down in the sand about every 4-5 inches. Sometimes not even that close before I put the snails in. Now I don't stir at all, the snails do my stirring