All plants can benefit from CO2. I have some stems that greatly appreciate it. And the light isn’t too crazy, it’s potentially powerful but I’ve got it turned down to roughly 33-40%. The floaters like the light and keep things more shady for the Anubias and crypts below, while all get the CO2 they like.
And thank you. Yeah I wanted to keep it simple and stick to lower light plants, since I know Bettas enjoy that better