Try sticking a root tab under the plant. Maybe it will grow roots better.
I have the same problem, the plant prunes itself. Weak stems, not enough roots and lots of buoyant leaves. I pull the leaves on the fragment under the substrate to help anchor which works until the leaves rot away. Since the plant hasn't grown many real anchoring roots it comes right up again.
I would try to get the smaller grain eco-complete and sprinkle it onto the center of the blyxa. That will be enough to weigh it down until the roots developed. But if your tank have a lot of movement, then try planting it at an angle. These are some of the techniques I normally prefer.
thanks guys, but i can't get this to root its been like 8 months already. the plume of the blyxa is too big i might start editing, pull apart the offshoots... i only end up damaging the plant if i pull the blades down to bury it... might be RAOK a couple stems soon
i ony have one high tech tank, the blyxa will suffer (ot become a sala bar) in my other tanks
“Goodness is the only investment that never fails”
It will grow without the gas only slower.
Growth in my high light gassed tank creates a 'blyxa huge sale' about every three months. Once the crown gets large it starts pulling away from the substrate.
The soil based, non gas, medium light systems it behaves for almost 9 months before I split and replant.
This is the gassed 75g due for a trim / replant (Flourite base)
You can see the shadow under the section on the right side because it's pulled up almost an inch off the sub. Blyxa seems to have a weak root system even with a rich sub the roots snap easily.
The Fraternity of Dirt
If at first you don't succeed,,, keep kicking it RubberSideDownOnTheLanding, 2-75g planted, 5-55g planted, 5-20g planted, 110g w/30g sump, 8-10g, Refugium, doghouse/newbie 2012 update adding table top pleco pans & a 90g (Nutz)