Posted: Sun Dec 11, 2005 2:06 am
I have to disagree, I have a 150 gallon tank and used a Magnum 350 AND a Whisper 3 (the dual) on it and that was not enough-- The Magnum 350 is rated for a 100 gallon tank and the Whisper is for a 60 gallon tank.. I would use 3 - 4 X the rated tank size not the filter output. Right now on the 150 gallon tank I am using a filter rated for a 1500 gallon POND! For a 75 gallon tank I would use no less than a filter (s) rated for a 225 to 300 gallon tank and for a 120 gallon tank, I would use a filter (s) rated for a 360-480 gallon tank. When you need to get that big with filtration, it can be easier to buy 2 canisters, or as I did a pond filter.
Scooter (10") & B.C.(11") both female.
150 gal with 2 Pondmaster 1500s