I have a spare 10, 75, and 90 gallon I can use for whatever.
That said, can you explain the difference? Obviously hospital is for sick fish and quarantine is generally used to observe new fish before adding to an existing population. Could they both be the same tank? Is one always up and ready.... As in cycled? Etc?
Yep, those were my thoughts as well..
My understanding of a quarantine tank is a place of treatment like a hospital, not a place to see whether your fish will die or stay alive. A quarantine tank is a place to see if any ailments occur in the new fish due to the new fish being introduced to an "old pond" fish and "old pond" water. Also, for new fish and new plants, it is a place to kill any parasite, disease, fungi, snails, or other organisms that can potentially be transferred into your pond. For sick fish, it is a place to help medicate them and heal them. I think containment is more about the controlled environment. It is easier to control the environment of a 80 gallon pond instead of trying to control the environment of a 8000 gallon pond.
Although, I do see the difference...
The "quarantine" tank is a tank for mainly observation and long term medications and it has its own cycled filtration system.
The "hospital" tank would be the tank that does not have filtration and is only used for highly concentrated, short medicated dips or to put a fish to sleep so to prep them for an injection.
I think it would be smart to have both, but, since I have never needed to do medicated dips nor to prep fish for injections, I never had a need for a "hospital" tank.