This hardy foreground plant looks like grass and grows like crazy producing runners. It is a 1.5 on a difficulty scale of 1 to 10 as it only needs good substrate or gravel to thrive. It grows fine in low light, but creates a carpet faster in higher light.
It stays short and only gets about 3-5 inches tall so you can run it as a nice fore to mid ground plant. It can handle pretty much anything from 65 to 85 deg F.
