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Thread: Yellow dust at bottom of pool

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    Yellow dust at bottom of pool

    Hello. I am new at this whole forum thing and new with pool stuff so forgive me if I struggle. This is the 2nd summer I have had my pool. It is a 18x36 I believe. I live in North Alabama. My pool is a chlorine pool. I have tested my water and everything is right on point. My water is clear and has been clear for the past month. In this month I have had this yellow/green looking stuff settled at the bottom of the pool. I have put algaecide in and that didn't help. I vacuum to waste using my hand vac and all that does is stir it up. It's like dust. I don't know what to do or even where to start now. Any help would be greatly appreciated! I will post a pic of my pool an what it looks like to help.

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    Butterfly's Avatar
    Join Date
    May 2007
    South Carolina

    Re: Yellow/green dust stuff in bottom of pool

    Welcome to TFP

    It would help if you would post a full set of test results and let us know how you got them.

    We would also like to see more info on your pool and equipment, too.
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

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    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    East Texas

    Re: Yellow dust at bottom of pool

    Welcome to the forum. Algaecide is a preventative------not a cure, and we rarely recommend it. Please post a full set of test results. Also, add a signature line to you profile and list your equipment and such. What is your clean filter pressure and what does it do after you vac? How are you chlorinating? For thye moment, I'd keep it brushed/stirred up and keep it filtering and see what it does. Pollen perhaps? Let's hope so!
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

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    Re: Yellow dust at bottom of pool

    I took a water sample to our local pool place and my test results are
    Total Hardness: 250
    Total Chlorine: 1
    Free Chlorine: 1
    PH: 7.8
    Total Alkalinity:100
    Stabilizer: 30

    I fixed all of my information in my signature line. I hope it worked.

    18x36 24,000gal,IG vinyl,AO Smith electic motor 1.0HP,Hayward pro series Sand filter 62GPM,3.14sq ft model S244T
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    Join Date
    May 2014

    Re: Yellow dust at bottom of pool

    I think You need a higher FC .Go to poolmath and enter your results,Also get a good test kit recommended on this site.
    You1ll be back in business in no time.
    35900 inground, 1 1/2 hp superpump, Jacuzzi sand filter, barracuda 3 cleaner

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    TFP Guide

    AimeeH's Avatar
    Join Date
    Apr 2012
    Columbia SC

    Re: Yellow dust at bottom of pool

    Welcome to TFP

    You need to get a good test kit. That "could" be pollen but I would suspect that the major pollen dust season from pine trees is well over there. With your FC of 1 it could also definitely be algae.

    How are you chlorinating?
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.

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