planted tank with substrate, biological ecosystem is essential to control harmful waste, and do some clean up..
As a species.. cleaning and changing substrate weekly - needed if using substrate alone, stresses them..
So.. even if you ONLY use plastic fake silk.. or a combo.. but want a active substrate.. = NEED to add fauna..
Brev owners are using a lot of good info and what has been found good trial and error by many of the dart frog owners.. at least here in the US, in Europe the idea of active, biological substrate for a LOT of reptiles, including standard chams is kind of accepted..
So yes, springtails, and possibly Isopods are essential, for a brev or stum tailed cham habitat! also need a bit of time to allow them to populate a viv before adding the animals..

also freshly planted viv grows some weird stuff perhaps harmful, during the cycle.. Although I LOVE Josh frogs website.. great prices.. NE herp has some excellent guides
http://www.neherpetoculture.com/care and supplies too
as for isopods, fruit flys, or other possible feeders.. you will be surprised how much these guys eat in relation to size, add a natural viv the feeders get lost really easy.. Having a in viv, natural food source is a good thing! also get brevs.. look into bean beetles, Fruit fly cultures.. or you will go broke quick feeding crickets!