Hi All
I have three Angels in my 20 Gallon with a Penguin 200 filter. They are doing great after nearly a year, but I know it will be time to move them up to a 30 or 50 in a few months.
My main question is with my Penguin filter is there a need for an airstone in the tank as well? Do the HOB filters add enough oxygen to the water, or is an airstone also a good idea?
I have one in there now, but just wondering the need or do I have it there because it seems a "good thing" to do.
Just looking for some facts.
Thanks
I have three Angels in my 20 Gallon with a Penguin 200 filter. They are doing great after nearly a year, but I know it will be time to move them up to a 30 or 50 in a few months.
My main question is with my Penguin filter is there a need for an airstone in the tank as well? Do the HOB filters add enough oxygen to the water, or is an airstone also a good idea?
I have one in there now, but just wondering the need or do I have it there because it seems a "good thing" to do.
Just looking for some facts.
Thanks
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