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Thread: Sand or Cartridge for pool with high metals?

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    Sand or Cartridge for pool with high metals?

    I apologize for all the questions...

    If we are going to be using a lot of sequestrant (Metal magic stuff) to pull the iron out of our water (3ppm) would we want to have a cartridge or sand filter? Also are there tests for metals, or do we just assume?

    I'm just worried with backwashing a sand filter, each time we re-fill we are just adding more iron, to backwash it out and end up in an endless loop.

    A cartridge filter, I am concerned that the cartridge will get plugged up with the metals. But at least we won't lose/add water with backwashing.

    Thoughts? The pool store suggested using one of those filters that goes on the end of the hose to help pull out some iron. I thought if it is less than 500 gallons (how much do we use in backwashing???) that we could pull a hose from the house and use soft water, but my TA will be out of this world high...just know that from my fish tank. I can't adjust the PH for the life of me with our soft water.
    24' Round Diamond Star, 54" wall height, 200sq ft sta-rite cartridge filter
    Dynamo 1hp 2 speed pump, 199k Rheem milivolt heater
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    Re: Sand or Cartridge for pool with high metals?

    Neither the sand filter or the cartridge filter can filter small enough to catch metal ions. I think that it would be easier to have a cartridge filter setup so you wouldn't have to continually add as much sequestrant as no water is lost to backwashing. Save money that way.

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    Mod Squad Bama Rambler's Avatar
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    Re: Sand or Cartridge for pool with high metals?

    I agree that a cartridge is your best choice. I'd also suggest using the soft water for small refills. You can always adjust the TA if you need to.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Sand or Cartridge for pool with high metals?

    Is this high metal content a result of using well water?
    Intex Ultra-Frame 18x52
    Intex Sand/Salt Filter

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    JasonLion's Avatar
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    Re: Sand or Cartridge for pool with high metals?

    Texan78, metals can come from several different places. Well water is one common source, but not all wells have metals and not all metals come from wells.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Sand or Cartridge for pool with high metals?

    Reason I was asking is if it is well water I came across a YouTube video where they had high metal content from the well water and the water was a brown color no matter what they did. It wasn't until they replaced the cartridge filter with a sand filter were they able to keep it clear. Was thinking maybe it could help them in their case on choosing a filter if they were having similar problems.
    Intex Ultra-Frame 18x52
    Intex Sand/Salt Filter

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    Re: Sand or Cartridge for pool with high metals?

    We are on city water that is pulled from a well. I don't think they do much to treat it other than reducing some of the maganese. I just wondered if using sequestrate is going to pull the iron out better with cartridge or sand.
    24' Round Diamond Star, 54" wall height, 200sq ft sta-rite cartridge filter
    Dynamo 1hp 2 speed pump, 199k Rheem milivolt heater
    Pool rover jr. - our best friend!
    Tf-100 plus borate strips and Taylor k1000.

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    Re: Sand or Cartridge for pool with high metals?

    I just wondered if using sequestrate is going to pull the iron out better with cartridge or sand.
    Neither the sand filter or the cartridge filter can filter small enough to catch metal ions.
    A sequestrant keeps the metal in soluble form but neither filter nor the sequestrant removes it.....it is still in your pool and will take continued use of sequestrant to keep it from precipitating.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    mcoonan's Avatar
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    Re: Sand or Cartridge for pool with high metals?

    How about something like this:
    http://www.poolsupplyworld.com/poolsupp ... /MT-50.htm
    to prevent the metals from entering.
    And then a cart filter similar to this:
    http://www.poolsupplyworld.com/poolsupp ... 17502S.htm
    Mike
    Intex Ultra 18' x 52" AG 6,981 Gal.
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    Medota Heights,Minnesota

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    NWMNMom's Avatar
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    Re: Sand or Cartridge for pool with high metals?

    We have well water with metal content. I use a sequesterant and have a sand filter with no issues. Just appropriately use your sequesterant with fills and it should be fine
    18x33x52 Buttressfree Seaspray (Wilbar) AGP - 1.5hp Pentair Maxim w/22" Pentair Meteor Sand Filter, Aqua Rite SWG System, Biltmore Walk In Steps - 2/4x20 Solar Panel Setup - Doheny Jet Drive (RIP -Pool Rover Jr) - finally hard plumbed the whole darned thing -
    Beats Driving to the Lake!

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