Here you go. Now you have something exciting to do tonight.
http://www.haywardnet.com/pdfs/Pump_filter_sizing.pdf
Have you checked-out the Pentair IntelliFlo Pool Pumps?
They're expensive but can really cut your energy costs. Probably pay for itself within a year or so.
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Kramer: I'm freezin'! I just need to get my hot tub running. I'm waiting for my new heat pump.
George: Well what's in this giant box out in the hall?
Kramer: Uh? Oh that must be it.
George: It's huge!
Kramer: Yeah, yeah, I got the biggest one they had. It's industrial strength. 16000 BTU's.
Check the label on your 2hp pump for the “SF” the true hp is the rated hp multiplied by the SF number ,, it can range from 0.9 to about 1.5 ... if your 2hp pump is a SF 0.9 then you really have a 1.8 hp pump and a 1.5 hp pump with a 1.2 SF will replace it ...
With a DE filter you have a problem with dirt and debris going back into the pool after every instance the pump shuts off and restarts .. I am assuming your DE filter redeposits the DE powder on the screens automatically at startup ... with every power cycle you let MOST of your dirt go back in the pool ...That is why commercial/public pools are required to filter 24*7*365 .... you should probably get a sand filter..
8 - 10 hrs a day is too much....IF that's your average over a year.
My rule of thumb was to buy the biggest equipment you can afford...and keep you water chemically correct.
Good luck!
