I have a scape set up with narrow leaf Ludwigia as the only stem plant right now. I had Ludwigia inclinata but it recently all melted. I would like to add another easy stem plant that doesn’t need co2 injection to go in the far right and left corner of the tank. I was going between limnophila hippuridoides, Rotala indica, or maybe siamesis 53b? Any help would be appreciated to pick a good stem plant that won’t need co2 to grow well or high light! Thank you for any info! The tank is a fluval flex 9 gallon!