Cracking mate. Beautiful snake. Loving the viv, although I personally would stay away from the Chip/Cube like substrate. As MBK's are crazy feeders, they could easily ingest one and cause severe impaction, that's unless you feed outside of the viv. Aspen is my preference, gives them something to hide within too.
thanks i did try and get aspen but my local pet shop only had the chips and his viv desperatly needed cleaning when i first got him so i just grabbed em.im defo gonna get some aspen for when i next clean out his viv. nd i feed him in a rub so he doesnt think im food when i put my hand in there