This is my second try. I got a bunch of seeds from a hobbyist and put them on LECA first. Most of them got washed away, and those that stayed, died a pretty quick death.
I had to try a different method.

Gladly, I found some leftover CP substrate (peat + perlite) in my parents garage and placed it into a petri dish.

Now, about 3 weeks later, they germinated.

I transferred them into living sphagnum moss now and hope they will survive 😬 Update will follow soon! 💪