I think the plant is another growth form of H. corymbosa. I've had something similar. It grew easily but looked a little weedy. I couldn't find a place in any of my tanks were it looked attractive so I eventually pitched it out.
If H. salicifolia is the same plant as H. angustifolia here's what I have to say;
It's suited more for a taller tank - 1-1/2 ft. and above. It creates a "waving hair" effect because the leaves grow up to a foot long under good light. With good trimming it looks good in a 55 gal. tank too.
The color of the leaves is fresh green. Lack of N causes pinkish-reddish leaves. Very easy to prune because most of the nodes develop 2 new shoots so even after severe prunning it still looks nice and full.
Thanks for the info! The plant does look really nice in your tank, Niko. Each leaf grows up to 12" long? Wow! I have a feeling I'd end up liking this plant in the same way I like Vallisneria -- looks great in someone elses tank!
Salicifolia is one hell of a plant. It looks good IMO but its far too fast and large. Its internode spacing is (In my tank) like 2-3 inches. Grew 2-3 inches a week and was a good foot in diameter. I threw it out, but when i did it's roots looked like they controlled half the tank.