That blyxa japonica is insane. All of your plants are amazing. Is the grassy plant in the back left the other type of blyxa? I can't think of the name right now.
So are you adding a lot of extra iron to get that coloring?
dantra, If you want a fast grow, make no3 20/30 po4 1.5 and you will see the efect.
In this case your plants will become GREEN. as the first picture.
Now, I made,them red, with :
fe 0.2 /0.3
yikesjason Yes in the left it's Blyxia augberti
well the iron... give's the coloring