I never faced any issue with plant growth. In my low tech tanks plants like Rotala, Ludwiga, water wisteria grow ver fast. Yes MC died because of my lack of knowledge and experience. It was that moment I realized that grasses (except of cryptocryne) need Co2. In my 37 L other tank, which also uses co2, pearl weed initially disappeared after 2 months it re-emerged and started spreading like moss.
Edit: To summarize, stem plants, fast growing like Rotal, Ludwiga, Wisteria slow growing stem plants like Bacupa, dwarf amazing swords always grew well in my tank with / without CO2. In this tank I used dry start method for the first time for the hair grasses. In my 37 L tank if I would have used DSM pearl weed wouldn't have initially disappeared. From this experience I discovered that any grass that comes straight out of tissue culture will always have hard time in a newly planted tank without using DSM.
Anubias and Java fern looks healthy but when hair algae starts growing on it, some of its leaves turn fragile.