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Thread: Mustard algae attack....shocking

  1. Back To Top    #1

    Join Date
    Jun 2015
    Location
    Dallas, Tx
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    5

    Mustard algae attack....shocking

    So I cleared up a rather nasty algae attack when by pump broke and it took 10 days to get a new one. After that I had a cloudy pool for several days and then I was very close to absolutely clear then I observed my almost clear pool begin to turn yellow and now very yellow green very quickly. I'm first wondering if this is the dreaded mustard algae. According to the calculator I needed some 300 ounces of 10% bleach to shock. I poured 4 gallons into my pool and saw absolutely no difference the next day.
    I'm having trouble understanding shock. I was using powdered shock in 1 pound bags now I am using 10% chlorine in 1 gallon jugs. My pool is 8600 gallons and I need to know exactly what to add. If normal free chlorine should be 3 ppm and shock recommendation show close to 30 does that mean I need to pour in 10 gallons at a time?
    Thanks I can use all the help I can get, I got three little girls really want to swim
    12 x 24 x 52" above ground SWG Intex vinyl liner, Intex sand filter pump sf-15110, k-2006 fas-dpd test kit

  2. Back To Top    #2

    Join Date
    Dec 2014
    Location
    Santa Ana, CA
    Posts
    523

    Re: Mustard algae attack....shocking

    Quote Originally Posted by Merda View Post
    So I cleared up a rather nasty algae attack when by pump broke and it took 10 days to get a new one. After that I had a cloudy pool for several days and then I was very close to absolutely clear then I observed my almost clear pool begin to turn yellow and now very yellow green very quickly. I'm first wondering if this is the dreaded mustard algae. According to the calculator I needed some 300 ounces of 10% bleach to shock. I poured 4 gallons into my pool and saw absolutely no difference the next day.
    I'm having trouble understanding shock. I was using powdered shock in 1 pound bags now I am using 10% chlorine in 1 gallon jugs. My pool is 8600 gallons and I need to know exactly what to add. If normal free chlorine should be 3 ppm and shock recommendation show close to 30 does that mean I need to pour in 10 gallons at a time?
    Thanks I can use all the help I can get, I got three little girls really want to swim
    Please put your pool details and test kit you use into sig so ppl won't have to ask.
    Please provide test results if you used TF-100 or K2006 otherwise don't bother and buy one of those instead.
    Don't use tablets or anything else except liquid chlorine until you get reliable test results.
    44k plaster pool, Pentair 011018 pump, DE6020 filter, LED lights, K2006 test kit

  3. Back To Top    #3
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
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    23,994

    Re: Mustard algae attack....shocking

    First you need to SLAM the pool and pass that and then work on the mustard algae.

    Here is how to SLAM
    More here on mustard algae, Pool School - Mustard Algae
    TFP Moderator
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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