The African dwarf frogs aquarium must be larger in size for their survival. You will notice, however, that in the smaller aquariums, they love to lie on the bottom, swim into the corners and hide behind objects. If you move them to a larger aquarium, they are going to lie on the bottom, swim into the corners and hide behind objects. In other words, you can move them into a larger environment, but they do not need it. As well, if you should decide to move your frogs to a larger aquarium, then you will need to make sure that the African Dwarf Frog aquarium is properly filtered. You will need to apply and follow all of the general guidelines for a freshwater aquarium in order to make sure your frogs stay healthy and live long.
African dwarf frogs can be mixed with other aquatic life, and they do best with large, community fresh water fish (and, of course, other African dwarf frogs). With that said, it is best not to mix them with other fish in smaller aquariums, such as the EcoAquariums (or any aquarium less than 10 gallons). The reasons is that fish dwell at the top of the aquarium, while the frogs dwell at the bottom, so during feeding, it would not be uncommon for the fish to get all of the food prior to it reaching the frogs. You should also note that African dwarf frogs do not necessarily need to be with other animals and will indeed comfortably survived alone.
Lastly, it is important to remember that the African Dwarf frogs Aquarium is specially designed for small aquatic creatures such as your African Dwarf frogs. As a self contained and self-filtering ecosystem, they have the all of the comforts of amenities they need to live a long and happy life. Even if you ever do decide to move your frogs, we highly encourage you to keep your EcoAquarium active by adding another fresh water animal to the system.