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Thread: Cannot decide SAND FILTER or CARTRIDGE filter----HELP

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    Cannot decide SAND FILTER or CARTRIDGE filter----HELP

    Hi,

    After reading as much information as possible, l still cannot decide which filter (sand or cartridge) to buy. Hopefully I can get some help in next few days from any one of you, so I can replace them in next couple weeks as I think the filter may go out soon.

    Here is the situation, I have few trees around my pool, including bamboo & pine trees, and they drop leaves constantly, including bark once a year, plus a sandy backyard(trying to establish it, but not enough money to do it at the moment when we need to replace the pool equipment), so we constantly have to vacuum, hence backwash(we have a sand filter at the moment). I don't mind cleaning, but would prefer to reduce the time of maintaining and balancing chemical.

    I know the pros and cons of these 2 type of filter(sand & cartridge), and I know it doesn't matter which one i go for as long as l feel confident my choice will reduce my maintenance time. What I don't know is under the circumstances (A)which one is the most suitable in terms of money , efficiency, and less labour intensive ? (B) the size of the filter listed below, are they correct ? (C)If go for cartridge, how often do l have to replace the filter because of the debris, leaves, sand l get(manual said replace every 3 years!?) (D) Bigger is better for filter, but if l go one size smaller(i.e. 325sq ft filtration area) would that still be all right?

    SAND filter
    Astral C320: 50mm pipe, 0.3 sq m filtration area
    Hayward Pro S270: 50mm pipe, 0.34 sq m filtration area(I know S310 is more ideal, not enough room for clearance)
    Onga Pentair II P229: 50mm pipe, 0.397 sq m filtration area

    Cartridge filter
    Astral Viron CL400: 38 sq m(400 sq ft) filtration area
    Hayward Swimclear C4025: 39.5 sq m(425sq ft)

    The pump will be Hayward MaxFlow SP2300VS. Pool: 60,000 Litre, ~15,850 gallon

    Any help appreciated
    60K LITRE, CONCRETE PAINTED INGROUND, KIDNEY SHAPE, 1.1KW(1.5HP) OUTPUT POOLRITE SQI 600, 24" E600 SAND FILTER (GOING TO BE REPLACED), SWG: DON'T KNOW BRAND(GOING TO BE REPLACED)

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    Mod Squad woodyp's Avatar
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    Re: Cannot decide SAND FILTER or CARTRIDGE filter----HELP

    First question is, why do you think your current sand filter...."may go out soon"?
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
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    Mod Squad jblizzle's Avatar
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    Re: Cannot decide SAND FILTER or CARTRIDGE filter----HELP

    For your size pool, the recommended sizes would be about 3 sqft sand (24" diameter) or 225 sqft cartridge. So the filters you listed are significantly larger than you likely need.

    If your chemistry is maintained, the cartridges can last a lot longer than 3 years.

    You have to decide if you want to be backwashing and losing water or just rinsing the cartridges.
    Jason, TFP Moderator
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    bobodaclown's Avatar
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    Re: Cannot decide SAND FILTER or CARTRIDGE filter----HELP

    Hello,
    You don't actually replace the cartridges every time, you rinse them off, washing off the debris with a garden hose. It's pretty easy overall.
    http://www.youtube.com/watch?v=Vdq6ADapVHs

    Well you know how to clean a sand filter. Nothing to be said there.

    Your skimmer should catch the big stuff, leaves and such, then the trap should catch smaller stuff, finally the filter gets all the little nasties.

    A sand filter should be enough. When you're vacuuming what about using a leaf canister to catch the bigger stuff prior to it going into trap.
    http://www.troublefreepool.com/threa...ters-Effective

    Either way with an unenclosed pool you're still going to get the same amount of stuff into the pool, you've got to get it out. Now if you have a SWCG I'd lean more to getting a cartridge filter, throwing less down the drain when backwashing, but the sand should be fine.

    Are you backwashing at an appropriate pressure?
    http://www.troublefreepool.com/conte...er-maintenance

    Have you tried to rebed/clean the sand?
    http://www.troublefreepool.com/threa...x-it#post58929

    Another idea would be a robotic cleaner. Here's the link to mine doing it's job.
    http://www.troublefreepool.com/threa...obotic+cleaner

    Hope I've given some help.
    I have a cartridge filter, it's 100ft. During the summer heavy usage months, I clean it every 2 weeks or so. Takes about 15 minutes from power off to power back on. In the winter I go 8 weeks or so.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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    Re: Cannot decide SAND FILTER or CARTRIDGE filter----HELP

    Woodyp
    it's been around 10 years old (I know lots of sand filter last beyond that), we had few leakage along the way, the pump is too powerful for the filter we have, so the sand from filter has been pushed out alot. Rather than fixing it or try to find out what is going on we decide to buy a new bigger one to reduce the backwash (if we still go for sand filter this time) due to the conditions we are in. And we also getting the new pump to save our electricity bill(US$0.22/unit, and is going to go up soon)

    Jason
    The reason I go for bigger is to reduce the cleaning/backwashing because of the backyard condition (sandy & leafy ) If I can go for smaller size, and still catch the aim I want, what size you would recommend ?

    Bobodaclown
    Yes, it helps alot, really appreciated. Like Jason said I am oversizing my filter, as your pool is bigger than mine, but your cartridge is 100ft compare to the 400 sq ft I listed. I would like to have a robotic cleaner, but won't be priority at this stage. I think I am more leaning towards cartridge now...
    60K LITRE, CONCRETE PAINTED INGROUND, KIDNEY SHAPE, 1.1KW(1.5HP) OUTPUT POOLRITE SQI 600, 24" E600 SAND FILTER (GOING TO BE REPLACED), SWG: DON'T KNOW BRAND(GOING TO BE REPLACED)

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    Mod Squad jblizzle's Avatar
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    Re: Cannot decide SAND FILTER or CARTRIDGE filter----HELP

    I already made my recommendation ...not sure what else to say.

    Leaves should not be getting into your filter in the first place.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Re: Cannot decide SAND FILTER or CARTRIDGE filter----HELP

    I think i am over thinking now, that's why..Thanks Jason.
    60K LITRE, CONCRETE PAINTED INGROUND, KIDNEY SHAPE, 1.1KW(1.5HP) OUTPUT POOLRITE SQI 600, 24" E600 SAND FILTER (GOING TO BE REPLACED), SWG: DON'T KNOW BRAND(GOING TO BE REPLACED)

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    Re: Cannot decide SAND FILTER or CARTRIDGE filter----HELP

    You might try skimmer basket sock(s) to help clear the debris out better before it ever gets to the filter.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    Richard320's Avatar
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    Re: Cannot decide SAND FILTER or CARTRIDGE filter----HELP

    Either filter will work. Something to keep in mind, though, is water. A sand filter will use a lot more water to clean, so if water is scarce or expensive where you live, go with a cartridge.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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