I see from the plant profiles here and elsewhere that blyxa japonica gets from 4-6" tall, but this is clearly hooey since I have a glorious patch right now that stands 10" tall and remember having even taller (less glorious, more spindly) specimens. I am considering trying it as a background in my 30" tall 220g tank (with injected CO2) if it can remain bushy at 12-15" tall. Anyone ever succeed at this?