I would try and go back to the store and find out. But in the end it's your tank. I take things out when I don't like them too.
also, you can do a search online for betta compatible plants. From there you should be able to find plants that are good or not good for them. I would cross reference at least a couple sites if you can.
also, you can do a search online for betta compatible plants. From there you should be able to find plants that are good or not good for them. I would cross reference at least a couple sites if you can.