All I do is-

mix 2 parts vermiculite to 1 part perlite

Fill my pots with this mixture

dip cuttings in clonex rooting gel and wipe off excess

stick cuttings in the perlite/vermiculite mix

place potted cuttings in plastic propagation tanks

leave on window sill or similar place until roots grow

My clones root in about 10 -15 days with this method.