Hospital tank

I have two questions about a hospital tank. First, is 5 gallons big enough. I figure I will never have more than one fish at a time, and the LFS keeps a bunch in 10 gallon tanks. Second, does the tank need to be occupied at all times to keep the bacteria alive. Do I throw a damsel in?
 
T

thomas712

Guest
HOT filter = preheat oven to 450 degrees then..opps.. I mean ah HOT filter - Hang On Tank. ;)
Thomas
 
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