If you want to do a ecosystem tank then load up with Anubias, Java Fern, Java Moss, Green/Red Foxtail, water lecture surface floating plant and Red/Green Tiger Lotus (Pothos is another option for semi aquatic that work extremely well to absorb nitrate), stay away with amazon sword cause its their leaf get melt easy and look ugly
*If you get your plants from local pond then most of the time it will die in aquarium then re-growth again with new adjustment to your aquarium environment.