Response to This filter can handle up 72 GPM's per minute meaning that it will be able to accomodate 34,000 gallons in an 8 hour time period. So this filter can handle your 33,000 gallon pool, however if your pocket book can handle it I would suggest going up to the FNS Plus 48 Sq. Ft. DE Filter. A larger filter will put less strain on your pump and will have a larger filtering capacity meaning you will not have to backwash your filter as often as with the 36 Sq. Ft. model.

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