Slow-dagger
Aquarium Advice Activist
- Joined
- Aug 11, 2012
- Messages
- 193
librarygirl said:YOu can sure, a 20 long is great for corys. What substrate will you be using? Corys prefer sand; round gravel could be ok too as long as it isn't sharp. The gravel in the pic looks a bit jagged for corys. Also they do best in groups of their own kind, at least 4, so I'd get two more emeralds and if you wanted another type, add 4 more of those.