Today i collected a juvenile CB male, i think he's around 5 months old. Was looking for anyone that keeps them on a substrate? Have mine on a bio substrate of leaf mould/natural soil, with a drainage layer beneath. Added to this is the usual clean up crew of tropical woodlice, spring tails etc. I already use this in all my pygmy tanks, so know the substrate itself is safe. Just a little concerned regards them accidentally ingesting some substrate? Whats peoples experience regards using substrate for this or any other montane species?