I had eco-complete with cories and indeed it looked very uncomfortable. When my cories were rooting around in the eco I noticed their barbels would snag, and they would kind of stop what they were doing in an *ouch* sort of way.
I think if you had the eco-complete well planted it would be fine, and an open spot with sand would be awesome for them to do their foraging. Most any foreground plant properly filled in so your cories won't be scouring the eco directly would work.
I think if you had the eco-complete well planted it would be fine, and an open spot with sand would be awesome for them to do their foraging. Most any foreground plant properly filled in so your cories won't be scouring the eco directly would work.