One shouldn't give such statement after just one test

I am growing HC emerged for 2 and a half weeks now, and it is spreading just fine. Not adding any extra water because the aquarium is sealed (not air proof though).

I am also growing Eleocharis acicularis (same method) without any problems. I also mowed the Hair grass (emerged) and it regrow very fast (3-4 days).

I will try this emerged method with most of the popular foreground species and post back to you.

Regards, Dusko.