I posted a while back about making a pygmy viv and am now almost done with all the prep work. Just need a couple more items and to put it all together and it'll be good to go. I've come to a crossroad about substrate though. I see coco fiber/eco earth mentioned most often for substrate use, but as of late I've noticed that pygmy viv builds are almost identical to dart frog viv's. So, the question I've got is this: since dart frog viv's use ABG mix as substrate, with leaf litter and some sphagnum moss on top, would that be usable for pygmy's as well? My only really concern with the eco earth is whether or not it will support the springtails I'd like to introduce. That and I feel like (this is just observation and could be so far off it's not funny) plants have a harder time taking root in straight eco earth. Any input would be greatly appreciated. 