Through researching while starting my first RETF vivarium, I have been told by several to have a quarantine/hospital tank on hand. I am running to the Petco sale to pick one up today... what size should I get? I plan on having 2 RETF to start. I understand they should be quarantined for 30 days once they arrive in a tank outside of the vivarium. Should they be separate? SO do I need 2 tanks? And how should this tank be set up? Thanks for any advice or help you can offer!