Are more expensive I should quarantine. Planned fish are all pretty tiny so will my spare 5g be big enough. Already has lights and filter. Would a set up with heater, a aq 20, and bare bottom be ok? Do I medicate or not? My initial fish will be a pair of oscellaris clown fish. Since they are first in do they need to be quarantined. Do I need to quarantine inverts and coral ?