Planted Tank Obsessed
Join Date: May 2015
Location: Central Michigan
I wouldn't consider 60par low-tech in the sense of a "standard" low-tech tank. That's still a bunch of light. It's definitely lower than the 100par you grew it in but I would still consider 60par high-tech, IMO, depending on setup.
No Co2 + low light has always spelled disaster for Cyprus helferi when I tried to keep it. It's frustrating to prune because the individual leaves should be pruned from the base, not just hacked and trimmed. IME, when just cut, the leaves would turn yellow/brown from the cut ends and then just slowly melt away. I haven't kept it in any high-tech setup, I prefer Blyxa species for grassy plants.
It sounds like you want a lower light (<30par), lower maintenance tank. Have you considered needle leaf java fern? It has a pretty good grassy look when it's dense enough and should work great in a low-tech setup. I've seen a bunch for sale in the members forums lately too.