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Thread: Sand or dead algae?

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    lynzizzle's Avatar
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    Question Sand or dead algae?

    I'm in the middle of my SLAM and pool is crystal clear today and I can finally see the deep end clearly. I have what looks like a LOT of sand or dead algae in the deep end. How can I tell the difference?
    Lynzizzle

    IG, 25k gal (est.), concrete free form, Hayward S-244T 300lb sand filter,
    well water, Pump: AO Smith 3/4 hp, VSpd: Unknown, Pool Age: Unknown
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    Azgirl71's Avatar
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    Re: Sand or dead algae?

    Sand will be gritty. If you have a vacuum that has a bag filter on it, you could vacuum it up to see.
    Lisa
    Intex AG vinyl 15' x 48" 4,300 gallons due to skimmer install, Krystal Clear SF pump combo 2800 GPH, Krystal Clear SWG, Pool Blaster Max vacuum, Hayward thru the wall skimmer, TF 100 test kit with speed stir, K 1766 Taylor salt test, My SLAM Process

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    lynzizzle's Avatar
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    Re: Sand or dead algae?

    I don't I vacuum to waste (for now anyway)


    Lynzizzle

    IG, 25k gal (est.), concrete free form, Hayward S-244T 300lb sand filter,
    well water, Pump: AO Smith 3/4 hp, VSpd: Unknown, Pool Age: Unknown
    Welcome to our OOL. Notice there's no "P" in it?

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    duraleigh's Avatar
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    Re: Sand or dead algae?

    Brush it up. Sand will settle quickly back to the floor......algae will brush up into a cloud and seem to go away for a short while.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    lynzizzle's Avatar
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    Re: Sand or dead algae?

    I'm pretty sure it's sand. That's an AWFUL lot of dead algae in my pool.
    Lynzizzle

    IG, 25k gal (est.), concrete free form, Hayward S-244T 300lb sand filter,
    well water, Pump: AO Smith 3/4 hp, VSpd: Unknown, Pool Age: Unknown
    Welcome to our OOL. Notice there's no "P" in it?

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    lynzizzle's Avatar
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    Sand EVERYWHERE!

    Merged by Divin Dave

    So I'm pretty sure my filter is spitting all of it's sand into my pool. I have an insane amount of what looks to be dead algae on my pool floor. I just started the pool up Friday and pool was perfectly clear yesterday, allowing me to see the deep end clearly. I do still have some leaves and stuff in the deep end that need sucked up, however, this sandy/algaey substance in the bottom is making it next to nearly impossible.

    Is this dead algae or in fact sand? And can I vacuum up the substance to deposit back into my filter rather than vacuuming to waste?

    The filter lateral, sand and all o-rings/gaskets were replaced by a pool company last season at the beginning of the season. Could it seriously be that the lateral is cracked AGAIN?

    I started the pool up myself this year due to a HORRIBLE experience with said pool company and being stood up by a second pool company (the company who closed us down for the season). Did I possibly do this to myself?! I cant find the receipt for the repair work from last year to see if the work was warranted or not, but in all honesty, not sure I want those people back anyway.

    Someone please help!
    Lynzizzle

    IG, 25k gal (est.), concrete free form, Hayward S-244T 300lb sand filter,
    well water, Pump: AO Smith 3/4 hp, VSpd: Unknown, Pool Age: Unknown
    Welcome to our OOL. Notice there's no "P" in it?

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    Smykowski's Avatar
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    Re: Sand EVERYWHERE!

    You need to get in the pool and try so pick some up. Dead algae feels squishy. Sand feels, well, sandy. You'll know.

    Answer that question, and also, please post a full set of test results. That will also help us determine if there's something living in your pool and why.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    lynzizzle's Avatar
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    Re: Sand or dead algae?

    5/19 Results

    FC: 8.5
    CC: 0
    TC: 8.5
    CYA: 0 - filled another sock tonight to bring it up
    PH: 7.5 - right on the money!! ��
    Lynzizzle

    IG, 25k gal (est.), concrete free form, Hayward S-244T 300lb sand filter,
    well water, Pump: AO Smith 3/4 hp, VSpd: Unknown, Pool Age: Unknown
    Welcome to our OOL. Notice there's no "P" in it?

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    Mod Squad pooldv's Avatar
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    Re: Sand or dead algae?

    My money is on dead algae. Can you scoop some in a net? If it is sand then you have a bigger problem with your filter and some broken parts inside.
    TFP Moderator
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    Re: Sand or dead algae?

    it makes logical sense that its dead algae on the bottom. After all, you are in the middle of a slam and dead algae looks like sand.

    If you want to verify if sand is coming from your returns, use a rubber band and a nylon sock or some other material and rubber band the nylon sock to one of your returns.
    If sand is spitting back in the pool, the nylon will catch it.
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

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    lynzizzle's Avatar
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    Re: Sand or dead algae?



    ^this is what the inside of my filter looks like

    ^sand?


    Lynzizzle

    IG, 25k gal (est.), concrete free form, Hayward S-244T 300lb sand filter,
    well water, Pump: AO Smith 3/4 hp, VSpd: Unknown, Pool Age: Unknown
    Welcome to our OOL. Notice there's no "P" in it?

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    lynzizzle's Avatar
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    Re: Sand or dead algae?






    Lynzizzle

    IG, 25k gal (est.), concrete free form, Hayward S-244T 300lb sand filter,
    well water, Pump: AO Smith 3/4 hp, VSpd: Unknown, Pool Age: Unknown
    Welcome to our OOL. Notice there's no "P" in it?

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    lynzizzle's Avatar
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    Re: Sand or dead algae?

    Ok took both MPV and filter apart and nothing both look perfectly fine ::sigh::


    Lynzizzle

    IG, 25k gal (est.), concrete free form, Hayward S-244T 300lb sand filter,
    well water, Pump: AO Smith 3/4 hp, VSpd: Unknown, Pool Age: Unknown
    Welcome to our OOL. Notice there's no "P" in it?

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    lynzizzle's Avatar
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    Re: Sand or dead algae?

    Now I have sand in my MPV


    Lynzizzle

    IG, 25k gal (est.), concrete free form, Hayward S-244T 300lb sand filter,
    well water, Pump: AO Smith 3/4 hp, VSpd: Unknown, Pool Age: Unknown
    Welcome to our OOL. Notice there's no "P" in it?

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