The crypt is completely submerged right now, since it was so short, I figured it would grow out of the water at some point. I do think it brought in snails though, I'm not too thrilled about that.
I have never attempted to grow lobelia in a viv or in the water...maybe I will have to give it a shot. I'm assuming it is slow growing in the viv or submerged? I know mine struggles for growth when it is too wet outside. Maybe I will collect some seeds this fall!