I don't know the specifics of the conditions. I think the water is fairly hard.
I also have one Echinodorus, who seems to be thriving, and a few dwarf Java ferns. The Vals fail to root and end up rotting.
I'll try one more time, may be I'll get pictures then.
Thank you very much. I think you are right. It is the Sword who is hogging up all the space. Unfortunately I'll have to rid of it, too bad.
Right now I can't set up a larger tank so my tank is like 5 - 6 g. I guess I should opt for smaller sized plants. Any suggestions?