Oh, well. You know. Elodea Densa. Or Duckweed. Actually the last one I used in my aquarium a year ago and I can say that my clownfish liked it (at least I hope so). Maybe it will help you too.
Unfortunately my clownfish died when I forgot to feed them... Just read interesing book https://www.amazon.com/dp/B094NMRWPJ and forgot about them. My daughter still cannot forgive me.
That is actually a good example of how you do not need to forget about your present reality...