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Thread: Got mustard and it's not on a hotdog

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    Got mustard and it's not on a hotdog

    Think I got mustard. It's light brownish looks like dirt or sand and poofs away like dust if you brush it. The pool has been covered with solar cover for past 5 days. Just showed up last night when I was doing my nightly check of pool. So I brushed all the brown and went up to extreme shock level. Ran filter.

    It started like this.
    FC 4.5
    CC 1
    Ph 7.2
    CYA 35 last weekend (had some rain)
    TA 90 2weeks ago

    Added 1gal cheap bleach 11ppm
    Brushed pool. Check again in 30mins

    FC 15
    CC 1
    Ph 7.2

    Added 2ND gal of bleach 11ppm more. Test 30min

    FC 26
    CC 1
    Ph 7.2

    Now at mustard shock level. Left filter run.

    Checked 7am before work Approx 8hrs later.

    FC 19
    CC 1
    Ph 7.2

    7ppm drop!

    I added another gal or 11ppm before I left and brushed again and filter running. Solar cover still on. Im going to check levels brush and vac when I get home and do a really good backwashing.

    Im leaving for the weekend. Tomorrow at noon coming home sun at noon. Hopefully it won't go crazy while im gone. I was gonna get it up to 30ppm before I leave and run filter on 12hr cycle.

    Im pretty good with checking levels I check Atleast once a day. I have noticed the increased demand 4-6ppm with the cover on. But thought my CC was just due to the cover. Guess I was wrong. I'll increase filter run time from 4hrs to 8. After I pass OFCL test. And I'll be buying a wall climbing auto vac. Hopefully that will prevent any issues in the future.
    15'x4' Metal Frame Intex 3yo (2nd year winterized) 16" 2650gph intex sand filter, Thru wall skimmer, dual inlet/single outlet, 1000gph intex pump (heater) Solar Cover TF-100 testkit, TFPC

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    Re: Got mustard and it's not on a hotdog

    Test results
    FC 15..... Wow
    CC 1
    Ph 7.2

    I pulled cover and added half gal.

    Now it's

    FC 22
    CC 1
    Ph 7.2

    At docs now will test when back home before brushing and vac and backwash.

    Potential loss of 15ppm daytime with solar cover on. Although it was 90deg here today and very sunny. And I ran my solar.

    Interesting FC drop. I'll test my CYA after my backwash. We did get some rain couple inches
    15'x4' Metal Frame Intex 3yo (2nd year winterized) 16" 2650gph intex sand filter, Thru wall skimmer, dual inlet/single outlet, 1000gph intex pump (heater) Solar Cover TF-100 testkit, TFPC

  3. Back To Top    #3

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    Re: Got mustard and it's not on a hotdog

    Ok tested before brush and vac and had this

    FC 22
    CC 1
    Ph 7.2

    That was filter running and cover off after adding the half gal.

    Now after brushing and vac and good long back wash and rinse this is what we have.

    FC 20
    CC .5
    Ph 7.2
    CYA 20

    I did just add 1cup borax to boost PH as I will be adding stabilizer.

    Think im going to test once more for night so I get a final FC, CC and PH and then cover up and let pump time out. Retest in am for OFCL test go from there.

    All the algae I brushed the first night has yet to return hope it stays that way.
    15'x4' Metal Frame Intex 3yo (2nd year winterized) 16" 2650gph intex sand filter, Thru wall skimmer, dual inlet/single outlet, 1000gph intex pump (heater) Solar Cover TF-100 testkit, TFPC

  4. Back To Top    #4

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    Re: Got mustard and it's not on a hotdog

    final test of night!

    FC 18
    CC 1
    PH 7.5

    So I've decided that im going leave pool un-covered for the night, not worried about heat loss since its supposed to be nice for the weekend and it will be covered back-up. Also removed skimmer and running threw wall suction for the evening going to run all night stop just before sunrise. I'll be testing in the AM for overnight loss and see where I stand in my battle. I will be adding my stabilizer in the AM and my dosage of bleach and will check FC again before I leave at noon when I'll give final dosage of bleach set pump timer for 12hr shifts and covering it up and hoping for the best!
    15'x4' Metal Frame Intex 3yo (2nd year winterized) 16" 2650gph intex sand filter, Thru wall skimmer, dual inlet/single outlet, 1000gph intex pump (heater) Solar Cover TF-100 testkit, TFPC

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    Butterfly's Avatar
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    Re: Got mustard and it's not on a hotdog

    Leave the cover off during daytime so the sun can help burn up the CC.
    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. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  6. Back To Top    #6
    Mod Squad kimkats's Avatar
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    Re: Got mustard and it's not on a hotdog

    PH test is unneeded and unreliable with FC over 10. Just work on your FC and CC for right now.

    Good luck!

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    Casey's Avatar
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    Re: Got mustard and it's not on a hotdog

    May I ask why the pool is always covered? It needs to breathe. The sun helps burn off CC. I'm not surprised you have algae with the cover on so much.
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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    Re: Got mustard and it's not on a hotdog

    Overnight it only dropped to a 17 so it would have passed. CC in the morning were still 1 left cover off and filter running till got home tested and got this

    FC 11
    CC .5

    So it would be safe to assume that it prob would have passed again tonight but won't know cuz im not gonna be back until Sunday. So I added 3/4 gal bleach got my stabilizer hanging in there covered the pool up and turned the filter on. Hope all is well when I get home cuz first thing im doing is pulling the cover. Then im testing. Then im swimming!
    15'x4' Metal Frame Intex 3yo (2nd year winterized) 16" 2650gph intex sand filter, Thru wall skimmer, dual inlet/single outlet, 1000gph intex pump (heater) Solar Cover TF-100 testkit, TFPC

  9. Back To Top    #9

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    Re: Got mustard and it's not on a hotdog

    Update! Returned home to good news. Pool tested good upon returning.

    FC 11
    CC 1

    I pulled the cover and tested again before night was down to

    FC 8
    CC .5
    PH 7.2

    Im going to run a overnight loss check in the morning but right now we are at

    FC 8
    CC .5
    PH 7.5 I added borax due to drop from stabilizer.

    Pool is vacuumed and very clean. Hopefully we pass
    15'x4' Metal Frame Intex 3yo (2nd year winterized) 16" 2650gph intex sand filter, Thru wall skimmer, dual inlet/single outlet, 1000gph intex pump (heater) Solar Cover TF-100 testkit, TFPC

  10. Back To Top    #10

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    Re: Got mustard and it's not on a hotdog

    It is recommended to raise FC to SLAM when performing an OCLT to rule in/out organics.

  11. Back To Top    #11

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    Re: Got mustard and it's not on a hotdog

    We passed!

    FC 8
    CC.5
    PH 7.2

    Don't know why the PH dropped but did pass overnight loss test. Gonna run test again tonight. To be 100% sure
    15'x4' Metal Frame Intex 3yo (2nd year winterized) 16" 2650gph intex sand filter, Thru wall skimmer, dual inlet/single outlet, 1000gph intex pump (heater) Solar Cover TF-100 testkit, TFPC

  12. Back To Top    #12
    Butterfly's Avatar
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    Re: Got mustard and it's not on a hotdog

    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. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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