How To Filter 70 Gallon Tank?

[qoftheq]

So I'm planning to get a 70 gallon tank filled with nothing but corydoras catfish (weird, but I have an obsession with these little guys) and I'm wondering what would be the best way to filter it. I love love LOVE the penguin biowheel filters, and they make one that is supposed to filter up to 75 gallons of water, but I've heard that the manufacturers tend to exaggerate the power of their filters, so I don't know if this would be enough. I was thinking of getting one for 75 gallons and one for 30 gallons and running them together to get good filtration. Any thoughts?

 

[ox5477]

So I'm planning to get a 70 gallon tank filled with nothing but corydoras catfish (weird, but I have an obsession with these little guys) and I'm wondering what would be the best way to filter it. I love love LOVE the penguin biowheel filters, and they make one that is supposed to filter up to 75 gallons of water, but I've heard that the manufacturers tend to exaggerate the power of their filters, so I don't know if this would be enough. I was thinking of getting one for 75 gallons and one for 30 gallons and running them together to get good filtration. Any thoughts?

4x times filtration is the rule. So don't go by what they say is the tank size....go by the gph marking on the box. And I usually like to go with xtra filtration, maybe 5x to 6x atleast so I would say, find a filter that states is turns over atleast 350 to 400 gph.

It's easier on your end to just find one filter to do this. (less maintenance) But, running two separate filters would not be a bad thing and actually might be good as if you are keeping bacteria alive to set up a quarentine or hospital on a moments notice.