I have what I believe to be a healthy tank that seems to grow most anything well for me and I AM having trouble/w some Rotala
which got damaged. I apparently got heavy handed/w it when planting the stems and some(most) of them rotted off below the
surface. Didn't notice it for days as they were put behind other Rotala. But their growth stopped and after one floated up I found
that most were barely still attached to the bottom but by a few fibers of the rotted part. This left me/w pieces about 4" long as
they were small from the store. Three remain of them that are still growing but they still have yet to pass 2" of growth in a bit more
than a month. And one piece of a fourth one which had a fairly healthy looking top, but was only about 1.5" of it left, has refused
to either die or grow. Moral to this is be careful how short you cut them. Any which are over 4-5" seem to do much better than
the shorter pieces and I attribute it mostly to lack of light intake.
From the store these plants were not the best of shape that I've seen but the color was fabulous and it convinced me that I needed
them(yea) because of the old issue/w "it's been quite a while since there was any change in here"...
P.S. There is but a couple of the fabulous colored leaves visible due to it being behind another plant(s) but that Magenta color was from
top to bottom on them.