I was interested in making this mix for a new viv im building. I was wondering If I got the Zilla Jungle Mix which has Fir, Sphagnum, and Peat Moss in it. Would I be able to just add the charcoal and fine orchid bark? Just a thought.
Jungle Mix is just peat and shredded fir, there isn't any milled sphag in it. You would also need treefern fiber for it to be ABG. You could make a suitable substrate out of the listed materials. Won't be as airy as abg though. Some of the sponsors sell ABG relatively inexpensively, if you aren't doing too many vivs it would make more sense to purchase it pre-made.