In my ebi, dwarf riccia, rotala, and all the moss grow really well without co2. You can also try glossostigma as a carpet plant but you have to use all of your spare light though. I recommend fissidens fontanus and peacockmoss as they are two of the most baeutiful moss but suffer from slow growth. I bought 3 mat of 8 by 8 cm of peacock pad from ebay and it cover the front of the tank nicely, an it only cost 10 bucks shipped. Depend on where you live to since it is from oversea.
Last edited by Chipoi84; 07-29-2012 at 08:45 PM.
Reason: Added info