Using Lizard Fir Bark as Potting Medium

[Ducky87]

I was at the Local Petstore earlier today, and was looking at the condensed coconut bark blocks that you rehydrate with water to start some seedlings for my garden in this spring. Anyway, I ran across what seems to be a really good sized (small) pure fir bark that you use as bedding in Lizard cages. The stuff I found was a smaller grade that I usually have found, however it looks like the size fir bark that my first ONcidium came potted in. Would this be a good size to use as a Medium for some Orchids? maybe if i airated it with something just to give it some more air in case the bark pieces ore too small?

Thanks all!