Hi Kai;
I hope you have warmer weather there, we certainly do here now and all the snow and ice is gone and it's actually nice outside and there are traces of green showing thorug what remains of the snow.
Leaf mould, to anybody of British extraction is easy to get. You find it where you raked all the leaves too in the fall. Mine are willow and maple. I did make a hunt for silver birch leaves last year but they're dry in a big box in the barn. Guess I didn't understand to collect the black yucky stuff.
But I have that in my garden. So no problem.
Additionally had anybody tried putting this stuff in fishtanks in any way in submersed culture?
I will say (again!) that manure under sand does seem to do the same thing in aquaria. Here's a two foot tank of GRA and my own tank of "versicolor" (WEN? UND? X?).
So, what I really want to know is, does it matter if its Beech tree to the point where somebody has actually compared Beech tree leaf mould to other types. Or are you saying "we've found any leaf mould works the same" ?