I'm struggling to find a good floating plant for a 25g balcony pond since most floating plants are invasive and illegal in California. I've ruled out Water Hyacinth, Water Lettuce, and Frogbit. Does anyone have any suggestions? Anything you've had success with? For other Californians, am I understand the law incorrectly? I don't want to keep an illegal species. I also don't want to contribute to an environmental problem even if it's legal.
I appreciate the help!