Hmmmm.... Good question

The ABG from Josh's Frogs ( is great) ,however, it has charcoal and tree *fern fiber in it. The *tff is sharp!
- My last shipment had leca aggregate in it as well. The leca was not in my previous purchases of ABG from them.

Look at the ingredients in NEHerp's mix? Call them.... maybe they will make something for you? Lovely people.

Maybe its best to mix you own? This way you know their skin is protected.
You might message Shawn Harrington ( FB "The Frog Whisperer" ) he is breeding skinks - I think.
Ask him what he's using