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Thread: The Healthier Filter?

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    The Healthier Filter?

    I've read quite a lot on the forum about cartridge v DE v sand and there doesn't seem to be a consensus as to which cleans better or is easier to use. I'm going to be replacing my old DE this summer and adding a new pump and I have three questions:

    1) based on my pool size 14,900, should I use a 1 or 1.5 hp pump

    2) I've read a DE is healthier because it could filter smaller microbes and that if you have an algae bloom a cartridge makes it harder to get rid of. Is this true?

    3) I've already been quoted 1300 for this. Does that sound right?

    Many thanks!
    Robert
    Gunite. 14,869 Gallons. Hayward cartridge filter. Hayward Super Pump 1HP. Chlorine.
    Baltimore, MD

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    JasonLion's Avatar
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    Re: The Healthier Filter?

    1) Unless you have a spa or other water feature you want a 1 HP pump, preferably a two speed pump.

    2) No. Microbes will be killed by chlorine regardless of filter type, and are too small to be filtered out unless they clump together.

    3) That sounds high, though it depends on which specific model you are getting.
    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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    Re: The Healthier Filter?

    Thank you! The models he quoted me on where a Hayward Super Pump 1hp ( i was wrong), also not sure if it's two speed, and a Hayward c2030 cartridge filter. I've also read bigger filters and lower speeds are recommended because if you have a pump too fast the debris will bypass the filters? Do you know if that equipment sounds right?
    Gunite. 14,869 Gallons. Hayward cartridge filter. Hayward Super Pump 1HP. Chlorine.
    Baltimore, MD

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    JasonLion's Avatar
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    Re: The Healthier Filter?

    That filter is acceptable, but I would definitely recommend getting something larger. Larger filters go longer between cleanings and slightly improve the overall system efficiency.

    Getting a two speed pump can easily save you 50% of you electrical costs, well worth it.
    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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    Re: The Healthier Filter?

    Would you be able to reccomend one? I see yours is a 200 sqft, and you're only going with a 1/2 hp pump? Maybe a bigger filter and smaller hp pump with variable speeds?
    Gunite. 14,869 Gallons. Hayward cartridge filter. Hayward Super Pump 1HP. Chlorine.
    Baltimore, MD

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    JasonLion's Avatar
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    Re: The Healthier Filter?

    We got a 200 sqft filter because that is all there was room for in the equipment shed. Having lived with it for a couple of years, I would rather replace the entire shed than have gotten that small of a filter. The next time we are upgrading the shed is getting replaced and I am getting a 500 sqft monster filter.

    The 1/2 HP pump I have is a WhisperFlo, which are unusually large for their rating. It is actually a larger pump than the 1 HP SuperPump.

    The trick with pump sizing is that you need a certain flow rate to vacuum well and for cleaning up algae, but you want a very small pump for circulation. That ends up making a "small" 1 HP two speed just about idea.
    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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    Re: The Healthier Filter?

    Great. Thank you so much for your help. SWG is my next move but I can't do that yet financially but I hear it's well worth it.
    Gunite. 14,869 Gallons. Hayward cartridge filter. Hayward Super Pump 1HP. Chlorine.
    Baltimore, MD

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    Re: The Healthier Filter?

    found these two. You mentioned 1 hr would be ideal but you seem to be ok with your .5? I cant do the 500 sq foot but the 325 seems a good compromise. How does this set up look:

    Pentair WhisperFlo .75HP Energy Efficient Full-Rated 2-Speed Pool Pump 115V | WFDS-3 | 012530 $533.35

    Hayward Swim Clear In Ground Pool Filter Cartridge | 325 sq. ft. | C3030 $620.01
    Gunite. 14,869 Gallons. Hayward cartridge filter. Hayward Super Pump 1HP. Chlorine.
    Baltimore, MD

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    JasonLion's Avatar
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    Re: The Healthier Filter?

    The filter is a good filter. As I said, I would go larger, but that is a perfectly reasonable choice.

    The 3/4 HP WhisperFlo is significantly too much pump for your situation. It would work fine, but it will cost quite a bit more in electricity than other choices. The 3/4 HP WhisperFlo is comparable to about a 1.5 HP SuperPump. As I alluded to earlier a two speed 1 HP Hayward Super Pump or two speed 1 HP Pentair SuperFlo are better choices. They are smaller pumps, so more energy efficient to begin with, and low speed lets you save an additional 50% off your electric bill.
    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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    Re: The Healthier Filter?

    I misunderstood you! I swtiched to the hayward pump and because of the money, got a little higher capacity filter. Final thoughts?

    Hayward Swim Clear In Ground Pool Cartridge Filter | 425 sq. ft. | C4030 $703.41
    Hayward Super Pump 2-Speed with Switch | 1HP 230V | SP2607X102S $457.40
    Gunite. 14,869 Gallons. Hayward cartridge filter. Hayward Super Pump 1HP. Chlorine.
    Baltimore, MD

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    JasonLion's Avatar
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    Re: The Healthier Filter?

    That looks like a good combination

    Just to double check, I am assuming you don't have a spa, waterfall, or other major water feature. Something like that could change the recommendation. But for a simple pool, what you listed is great.
    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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    Re: The Healthier Filter?

    Yessir. No water fall or hot tub. Yet. I really appreciate all the help.
    Gunite. 14,869 Gallons. Hayward cartridge filter. Hayward Super Pump 1HP. Chlorine.
    Baltimore, MD

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