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Thread: is it normal backwash orange

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    is it normal backwash orange

    Just wanted to know if it was normal for orange/brownish water to come out when I backwashed sand filter. Just plastered pool and wondering if it can be dust. Also just changed sand in filter.
    24,500 gallon plaster i/g
    sand filter (Hayward S-200)

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    frustratedpoolmom's Avatar
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    Re: is it normal backwash orange

    Do you have well water?
    Have you recently added metal sequesterant?
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
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    Re: is it normal backwash orange

    I do not have well water but have added sequesterant as I just filled the pool a few weeks ago.
    24,500 gallon plaster i/g
    sand filter (Hayward S-200)

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    dmanb2b's Avatar
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    Re: is it normal backwash orange

    Mine tends to be tan/brownish. It's is probably the dust/pollen/soil in your area getting washed out of the filter sand and is fairly normal.
    24'x52" AGP (13,500 Gallons), Intex SWG, (2)Solar Bear 4x20 panels, Hayward S220T Filter, 1/2hp Pentair Superflo

    Pool School, TFTestKits, Pool Calculator

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    Re: is it normal backwash orange

    Well, it's a good sign that the water coming out when backwashing is some color......that means your removing stuff from the pool that doesn't need to be in there.

    As FPM suspects, it may be precipitated iron or it could be something else. It's still good that the water is dirty.....the filter is doing it's job.

    If you can post a full set of test results, we can probably help you identify what it is or, at least, help you make a better determination.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: is it normal backwash orange

    ph-7.6
    ch-200
    ta-90
    fc-low as I have been waitnhg 28 days before I can add salt due to new plaster. Been using liquid chlorine.
    As stated earlier I feel it might be the metals coming out as I was filling the pool for three days and adding sequestrant in that time. Thanks for all the help
    24,500 gallon plaster i/g
    sand filter (Hayward S-200)

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    Re: is it normal backwash orange

    It's still a guess, but I would lean towards dead algae as the cause. High temps and low chlorine for 30 days allows algae to get started. YOur low doses of FC are killing some of it but not all. What is killed, gets caught up in the filter and is (for me, at least) normally a brownish-yellowish color.

    If you have sequestrant in the pool, that would tend to keep the metal in suspension and not precipitate in your filter.

    How does your water look?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: is it normal backwash orange

    crystal clear
    24,500 gallon plaster i/g
    sand filter (Hayward S-200)

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    Mod Squad Bama Rambler's Avatar
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    Re: is it normal backwash orange

    Let me just jump on this wagon!

    You're not on a well but you're adding sequestrant, why?

    Since you're on public water you can get an assay (water quality report) and find out if there is any metals in your fill water. A lot of places even have them online now. I'd suggest getting one because if there are no metals then sequestrant is a waste of time and money. Also, you putting stuff in your pool that you don't need.

    You need to raise your FC up too. I, like Dave, suspect algae. How are you testing?
    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
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: is it normal backwash orange

    You're not on a well but you're adding sequestrant, why?
    I completely overlooked that, bama. Very good question.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: is it normal backwash orange

    There is a very high iron concentration in the water on Long Island in NY. Thus a sequestrant was needed. Thanks
    24,500 gallon plaster i/g
    sand filter (Hayward S-200)

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    Re: is it normal backwash orange

    Quote Originally Posted by wantobpoolmaster
    There is a very high iron concentration in the water on Long Island in NY. Thus a sequestrant was needed. Thanks
    Oxidized iron turns orangish, bleach oxidizes iron...

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