Need help

So I have another ??? When growing bulk .... using a mono tub method can a casting medium (Peat moss ,verm ) be used in replace of a manure based substrate. ???

There is no "casting " you should learn the terminology.

Why would you want to do this?

Obviously I'm asking for a reason.becauae I DON'T know. some things are easier to access this is y I ask. I'm not looking for insults I'm looking for advice. If that's to much then don't reply or respond!!!