yeah I have a dozen that I bought the night before I saw this thread. Drip-acclimated them for only about 20 min like I would tend to do with any other fish. They look great and seem to be taking well. I might pick up another 8 or 12 too. They look great in that school!
I have only the cardinals and two spawning pair kribensis in the 29g so I think 20-24 fish would fair just fine in that tank. pretty heavily planted w/hyrgo, watersprite, duckweed, java fern, anubias, java moss, ludwigia, and a few others.