I have an extra 12x12x18 and 12x12x12 cube that I want to setup soon. I was wondering what type of dart would do best in these size tanks?? I know that bigger is better but I have these available now so I figured I'd get some opinions.
12x12x12 is less than 7.5 gallons, then consider things like drainage layer and substrate and you will have a really small tank. I wouldn't really suggest any dart frogs for that. 12x12x18 could probably work for a pair of smaller frogs like Ranitomeya species if properly set up.