Hey there. I don't have any plants available right now. I'm waiting for it to warm up a bit more before I start shipping again.I have gotten several full carpets going without co2. Dwarf sag will do really well. I also did a carpet of utricularia graminifolia that did really really well. I did start it out with co2 but have ran the tank without co2 for the last several months and the uc is still nice and healthy. It will be a slower grower without co2. I have Monte Carlo in my paludarium without co2 and its a healthy green color. Its growing very very slow though. I've done a carpet of ammania bonsai without co2. Really slower grower once again but plants are healthy. I have tried it but I would think you could do a nice easy carpet with something like chain sword or any of the micro variants. With all of these I would try to plant 70% of your carpet and slowly let the other 30% grow in.