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Thread: Need Help Deciding On Filter

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    Need Help Deciding On Filter

    I am replacing all of my pool equipment, new pump, filter and heater. My pool is 30years + and it has an old 60 sqft DE filter. The pool is around 20,000 gallons, kidney shaped - 25ft long, 10 and 15ft wide. I also have two black labs that love to swim and a lot of dust in the yard.

    One contractor came to check out my antiquated system and suggested I use a Pentair 150sqft filter. I went to another store and he recomended a Hayward 425sqft filter but he did not come to check out the pool situation.

    I am planning on getting a Whisperflo pump and a Hayward H series lo nox heater. I am not sure on the size of the filter. Pentair also makes some bigger filters. Since i have two swimming dogs and a dusty yard, which should be dusty for too long after some landscaping, should I get the bigger filter or will i be fine with the smaller one as the first contractor suggested?

    I would like the smaller one since it is much easier to clean and wont be too expensive to replace the cartridges but I am afraid that with two dogs I will have to clean the smaller filter a lot. This means i should get the bigger filter but then I am afraid at the cost of having to replace all those cartridges.

    Any suggestions...
    25K Pool Kidney Shape
    Spa
    Water Slide
    320Sqft Pentair Clean and Clear Cart Filter
    1.5hp Pentair WhisperFlo pump
    400k BTU Hayward LoNox Heater

  2. Back To Top    #2
    Guest
    have you thought about sand, sand and cartridedge both filter down to the same MICRON, so sand is VERY easy to keep, just back wash once a week and your fine.

  3. Back To Top    #3
    JasonLion's Avatar
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    As a general rule you will be happier with the larger filter in the long run. Larger filters reduce the frequency of filter cleaning and they typically have less water resistance so the pump moves more water. If properly cared for the cartridges should last quite a while, years. So the cost of cartridges is not generally significant compared to the other costs of operating the pool.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    ktdave's Avatar
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    Another vote for "the bigger the better" (filters, that is). I have a 11,000 gal pool with a 420 sq ft filter. LOVE IT!
    11,000 gal. gunite w/midnight blue and white pearl PebbleTec
    Intelliflo 4x160 pump
    Intellichlor IC-20 SWG
    Pentair cartridge filter 420 sq. ft.
    Mastertemp 400K BTU heater
    Legend Platinum cleaner
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  5. Back To Top    #5
    Guest
    i vote for bigger too, i only have a 400 pound sand filter and it does alright but i could be alot better so im hoping to upgrade here in the VERy near future.

  6. Back To Top    #6
    Quote Originally Posted by ktdave
    Another vote for "the bigger the better" (filters, that is). I have a 11,000 gal pool with a 420 sq ft filter. LOVE IT!
    ktdave,

    How is your experience with your Pentair filter and pump? I am trying to decide between Hayward and Pentair for the filter.
    25K Pool Kidney Shape
    Spa
    Water Slide
    320Sqft Pentair Clean and Clear Cart Filter
    1.5hp Pentair WhisperFlo pump
    400k BTU Hayward LoNox Heater

  7. Back To Top    #7
    ktdave's Avatar
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    May 2007
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    Katy, TX
    Posts
    888
    Quote Originally Posted by f18fdg
    ktdave,

    How is your experience with your Pentair filter and pump? I am trying to decide between Hayward and Pentair for the filter.
    So far they've worked GREAT! I've got crystal clear water and the pump runs at a low enough speed that its very energy efficient. But I also like the ability to turn the pump up if we want the bubbler higher or when I want to mix chemicals quickly.

    I have no experience with any other equipment other than Pentair, but I know there are several Hayward owners around here.

    Good luck with your decision.
    11,000 gal. gunite w/midnight blue and white pearl PebbleTec
    Intelliflo 4x160 pump
    Intellichlor IC-20 SWG
    Pentair cartridge filter 420 sq. ft.
    Mastertemp 400K BTU heater
    Legend Platinum cleaner
    Pool School
    JasonLion's Pool Calculator
    TF Test Kits

  8. Back To Top    #8
    mas985's Avatar
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    Pleasanton, CA
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    I have a Hayward cartridge filter and no complaints. Works pretty well and I need to clean them at most twice a year so maintenance is not an issue. However, that is only true when you oversize the filter.

    Here is a good site for a comparison of filter types. Generally, DE has the best filtering capabilities, then cartridge and sand is the lowest. However, if you use Zeobrite instead of sand, then a Zeobrite sand filter has about the same or more cleaning capability as a cartridge, at least that is what Zeobrite claims.

    Here is another good site on filter comparisons.
    Mark
    Hydraulics 101; Pump Ed 101; Pump and Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, 1/2 HP 2sp pump, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater, ThePoolCleaner

  9. Back To Top    #9

    Join Date
    Jun 2007
    Location
    North Florida
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    My StaRite System 3 cartridge system is 300 sq. ft. of filter area for 17,000 gallons. It does a great job, rarely registering even a 1# increase in pressure. I clean it spring and fall just 'cuz I think I should. The drawback is that replacement media run $300-$400 for the 2-cartridge set. My set is coming up on 2 years of use and they still look good.

    One of my dogs, a Lab mix, loves the pool and sheds hair like a purebred Lab. We also have winds that routinely blow in dust, dirt, pollen and other debris. We have no cover. I heartily recommend skimmer sox (debris shields) and a skimmer pole to get the hair and other debris out of the pool before it gets to the filter.
    Sandy

    15,600 gallon, screened 15 x 30 sport pool with 6 x 8 baja shelf, IG plaster (Diamondbrite??), Hayward cartridge filter, 1-HP Hayward pump, Hayward/EUS Mark VI heat pump, Polaris 280, AquaRite SWCG

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