Originally Posted by Philsuma
this is why I used leca/hygrolon in all my tanks - breeder and temp.
The wonderful spaces between the balls allows = good aerobic.
The tiny balls are fired clay already - dunno if that would have a calcium transfer benefit.
Springtails like isopods need calcium to grow cuticle / bodymass. Best food I've found is Josh's frogs spring to life.
For springtails is usually mix a bit of calcium carbonate into their food and for isopods I put some cutllefish shell pieces (cleaned and boiled) into their box. I also usually do this in terraria to provide the resident isopods with a calcium source.