I got these last week and I'm trying to ID them still.
I think this first one is either ammannia senegalensis or A. gracillis. It still has its emersed growth on the bottom.
My guess on the next one is hygrophilia corymbosa 'compact'. I currently have H. corymbosa siamensis and the leaves are similar but this one is turning reddish brown, something my siamensis does not do. Pic is not that great.
Last one might be too early to tell. Without a doubt it's a crypt. I'm hoping it's c. parva but may have to wait a while to know for sure. You can judge it's size by the clover in the foreground. Sorry the pic is out of focus a bit.
Any guesses?