+1, try Limnophila Sessisflora instead.
Whilst Vallis can be a little picky.Some people can grow it very easily, with no effort.Other can't, no matter what they try.Maybe you'll get lucky
Also, can't go wrong with Java Fern & Anubias as long as they're attached to wood/rocks
I'm new to plant keeping myself and have had great success with Moneywart. Of all the plants I've put in, it has thrived the best so far. Really took off under my high LED lighting
I should add that I had no success with the cabomba I put in, and it actually made a bit of a mess of my tank. I am still picking out floating chunks of it. Not that my opinion if worth much, total newb here.