I have coco husk, sphegnum moss and exxo terra plantation soil. Is there anything else i should add to this mix to make a ideal planting mix/substrate for my vivarium? My viv has a false floor and a waterfall pump, so drainage and stagnant water shouldn't be a issue. Also i would like to add a culture of springtails to the substrate to help decompose all the waste how do i do this?

I know everyone swears by abg mix but im not ordering that stuff from the states and no gardening places around me have a mixture even close to that.