Hi Patricia
You can seed with both but I just use springtails myself.
As for cleaning the substrate, if you have a drainage layer then the only cleaning needed is the removal of visible waste and dead bugs daily so it doesn't become a chore playing catch up and the frogs are not spending time next to their own waste.

I use a paper towels and a pair of longer forceps. Waste that drops into live plants is fertilizer and the ecosystem you made cares for the rest.


As for drainage layers, I like Hydroballs myself. Having the drainage layer separate from the top layer of soil gives the water a place to evaporate or just collect for drainage later with a pump or siphon hose. Having the soil continually in water will cause the soil to rot and the same with most plant root systems.