I agree. No neons. Here are some potential tenants:
One of these
-5 male Endlers livebearer
-6 Microrasboras*
-6 Emerald eye / green neon tetras
-3-5 Male Guppies
-3 Bumblebee gobies**
-1 Dwarf puffer**
-3 African Dwarf Frogs (possibly?)
And / or one of these (except with ** fish)
-4-6 Dwarf shrimp eg. Cherry Shrimp, CRS, CBS, Pearl Blue Shrimp, Emerald Green Shrimp, Amano Shrimp
-3 Ghost Shrimp
-2 Zebra / Nerite Snails
-1 Ramshorn Snail
* This genera includes a zillion little rasboras that are all under about 1.5". Very cool fish and perfect for small setups. Just a few from this family are: Celestial Pearl Danios / Galaxy Rasboras, Boraras briggitae, B. merah, exclaimation point danios... the list goes on! DOn't forget: keep no less than 6 of the same species.
** For more experienced fish keepers. They are rather messy and will not accept dry food.
Hope that helped! Obviously you will have to fiddle around with the actual numbers if you want to get reasonable bioload but all species should be happy in an Edge.