I would get the hang of low light plants before getting into carpeting plants.
Carpet plants no co2.
Many of the more attractive species of carpeting plants grow better with more light.
There are certain species you could try dwarf sags dwarf hairgrass marsilia certain hydrocotyle spp etc.
Acclimation the most difficult stage of growing a carpet is at the start.
For fish tank owners who regularly replace their aquatic plants they might not find this approach useful.
Some of the hygro require co2 and lots of light.
You need to remember the goal is to achieve carpet in a low tech no co2 planted tank.
Anything that would grow like you are describing needs high light lots of fertilizer and co2.
You need to wait before a balance is existing in your closed eco system.
Hairgrass would probably struggle to stay alive and i know you could not get a carpet from it in inert substrate and no co2.
Tips for better success rate with low tech carpet.
So first of all forget about fishes at least till the plants are flourished and a decent carpet is achieved.
Carpet plants also offer an alternative to floating or vertically growing plants in their aquarium.
Picking out the right carpet plant for your aquarium is certainly tough especially when trying to select the right plants for beginners.
In nature many aquatic plant species grow in co2 rich environments but here we want a low tech setup that does not use co2 injection to replicate such a condition.
While others will grow anywhere just about with no co2.
But like i said a bunch of light without co2 isn t a good formula to experiment with.
To use a non carpet plant as a carpet you need to be able to keep it trimmed short.
Can act as carpet plants and aren t very picky.
Certain hygro stem plants work well for this.
Negative aspects of selecting non co2 plants non co2 plants feature a slow growth rate and people who want a rapid growing plant in their aquarium will surely be disappointed and should look into setting up a co2 planted tank if they already haven t.
It tends to turn out poorly for most people.