I currently have some that are growing out of the water of a 55 gallon tank. I actually measured one for you and it is 27" tall. Give them more time to adjust.
How tall is this plant supposed to grow? I was under the impression it would reach a decent height and grow fast.
So far, it's topped out at like 5"-7" and took it's sweet ol' time getting there. It's been about 5 weeks since I've had it. It looks great, nice and healthy and VERY pretty.
My specs are:
4x 18w T5NO (two 6700k, two rosettes)
EI dosing with A LOT of extra iron (only way to make all those rotalas and ludwigias happy...)