easiest carpet plant

[Danielfishlover]

Which is the easiest carpet plant. No co2, low light and using root tabs

 

[Coyne]

In low light conditions plants tend to grow up ,to get closer to the light, rather than out to cover the surrounding area.
I don't now if there is an "easy" carpeting plant that will thrive in the conditions you describe. I suppose you could try growing Java Moss tied to some of that plastic canvas you get at craft stores.

 

[fishenthusiast]

Which is the easiest carpet plant. No co2, low light and using root tabs

Look into Marsilea sp. It is a slow grower and it'll take a long time, but it is a nice looking plant. Crypt parva is another nice option, but it grows really slow as well--with patience, it'll eventually give a carpet effect.