All mine are in a greenhouse, bar two.
I’m not paying much attention to them at the moment due to life changes, but…
All common floaters do well. Apart from Salvinia Natans, I think it’s a combination of too much humidity and low temps. I mainly keep frogbit in greenhouse and Pistia Stratiotes outside.
I have a couple of types of hornwort, one has a red stem and it’s a really nice plant. I keep all my Anubis’s in tubs in the greenhouse with varying success. I guess it’s fair to say my tubs are fish first. I do have a marigold growing out of the tubs too.
The outside tubs are really for live food cultivation, thank goodness, as they’re a magnet for some kind of hair algae. Algae has gone bonkers this year.