Looking good. Can I suggest you do something with the crisp, clean tops of the wood? Grab a pliers and nibble at the edges or carve them a little with the dremel tool. Try to make them look naturally broken instead of cut.
Thanks, I just wish it was taller so it would've gone all the way to the top glass, but once it's packed with broms it probably won't be seen much anyway. : D
AGB is the soil mix, I believe the botanical gardens came up with it officially...? Basically it is a mix of charcoal, small twigs, tree fern fiber pieces, and sphagnum moss bits I believe. A long lasting, quick draining substrate!