> I just got a 15 gallon Hex tank for my daughter and have 8 fish in it..  > 
I was wondering if I needed a Oxygen source other than the filter for the > 
tank.. It's using a Aquaclear Mini filter..
I'm not sure about the specifics of your filter, but if it's rated for that 
size tank, it should be fine.  However, the word "mini" casts some doubts on 
whether it's designed for a 15 gallon tank.
Robby
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