I have a new 20 gal. with cool water fish: danios, a minnow and a ghost shrimp. Could you guys suggest a few basic plants that go well with cooler water?
I have hornwort growing in my pond, and some elodia. I also have water lettuce floating on top. Valis also do well in cold water, and I have had swords too, but they don't grow much, so I wouldn't say that is doing well. I think there are a lot of plants that will do well in cold water.
This shows what you can do at low temps, but equally you could go with almost any of the plants out there as 22C is still a tropical temperature really.