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Thread: Newbie with a cloudy pool

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    Newbie with a cloudy pool

    I started out with a green pool due to a broken filter. I got the filter fixed and with the advice found on your wonderful website, I know have a beautiful blue pool. However, it is still cloudy and I cannot see the bottom. Its been blue but cloudy now for at least a week.
    Test results from 2 hours ago are as follow:

    FC: 1.9
    CC: 1.9
    PH: 7.4
    TA: 133
    CYA: 24
    CH: 270

    I have a 6 way HTH test kit from Walmart, I intend to get the recommended test kit as soon as I can. These results are from my local pool store.

    I believe I am on the right track, but I'm still not clear on why it remains cloudy.
    25,000 gallons
    Hayward sand filter
    IG Vinyl pool

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    Re: Newbie with a cloudy pool

    You need to maintain shock levels of 40 % of the cyanuric acid level until

    1) You pass the Overnight Chlorine Loss Test (less than 1 ppm loss of FC overnight)
    2) Your CC is 0.5 ppm, or less.
    3) And, your water is clear.

    What is happening with the filter pressure? How often are you backwashing?

  3. Back To Top    #3

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    Re: Newbie with a cloudy pool

    Filter pressure is fine.....I've been backwashing when the filter pressure rises. When it was greener, I had to do so more often but now I'd say every other day. Btw....I've been running the filter 24/7.

    One more question....how much does the sun burn off? I've been told before to only add chlorine overnight. Am I correct(ed) that I should add as often as it takes to maintain shock level, even during the day when the sun is blazing?
    25,000 gallons
    Hayward sand filter
    IG Vinyl pool

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    frogabog's Avatar
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    Re: Newbie with a cloudy pool

    Quote Originally Posted by Tanya Marie
    Filter pressure is fine.....I've been backwashing when the filter pressure rises. When it was greener, I had to do so more often but now I'd say every other day. Btw....I've been running the filter 24/7.

    One more question....how much does the sun burn off? I've been told before to only add chlorine overnight. Am I correct(ed) that I should add as often as it takes to maintain shock level, even during the day when the sun is blazing?
    Yes, correct. Maintain shock level consistently until you pass the three criteria listed above.
    Where kids swim in 54 degree water, turn blue, and giggle happily cuz they got a POOL!
    Year 3 BBB -15' x 48" Intex Metal Frame - Was using (2) 1000gph Intex cartridge filters (see Full time pumping Intex). 2012, converted to 1600gph and sand filter+SWG = Sand filter love affair!
    Don't waste time and energy looking for a better value on test kits, the TF100 is the best deal around. I did the looking and spent the extra money, but you don't have to make the same mistake. Just go here: TFTestkits. I use Pool Calculator for min/max, and shocking chlorine levels.

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    Re: Newbie with a cloudy pool

    With a 6-way from walmart you don't know what your CC is. Where did you get that number?

    6-way is a great stop gap for regular maintenance while waiting on a DPD test but it won't help much with shocking.

    Edit by duraleigh: I'm fairly certain poster meant FAS/DPD test to test the higher FC levels used on this forum
    Garden Leisure Voyager 12x24 AGP, 7500 Gallons, Hayward Power Flo Matrix 1 HP pump, dual speed, Hayward XStream Cartridge Filter, 120 GPM,

  6. Back To Top    #6

    Re: Newbie with a cloudy pool

    You can add a pound or so of DE to the filter to help it catch the finer particles. Be ready to backwash in a few hours as the pressure will likely rise quickly as the dirt is caught.

    pool-school/add_de_to_a_sand_filter

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    Re: Newbie with a cloudy pool

    Quote Originally Posted by Sportsman
    With a 6-way from walmart you don't know what your CC is. Where did you get that number?

    6-way is a great stop gap for regular maintenance while waiting on a DPD test but it won't help much with shocking.

    Edit by duraleigh: I'm fairly certain poster meant FAS/DPD test to test the higher FC levels used on this forum

    thanks! and sorry.
    Garden Leisure Voyager 12x24 AGP, 7500 Gallons, Hayward Power Flo Matrix 1 HP pump, dual speed, Hayward XStream Cartridge Filter, 120 GPM,

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    Re: Newbie with a cloudy pool

    No, the number for CC came from a pool store. I am using the Walmart test to make an attempt to stay on top of this until I receive the FAS/DPD test, since I can't run to the pool store every hour and don't trust them either!
    25,000 gallons
    Hayward sand filter
    IG Vinyl pool

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    Re: Newbie with a cloudy pool

    Even "guessing" with my inadequate testing means, I am making progress. Had a good rain this evening and my chlorine is still holding. Dark orange on the inadequate WMart 6 way OTO test. I am hoping and praying it holds overnight and I see an improvement.
    25,000 gallons
    Hayward sand filter
    IG Vinyl pool

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    Re: Newbie with a cloudy pool

    I should have my Taylor test kit in a few days.....just trying to keep the chlorine at a safe level now so the kids can swim. Going to add some CYA also, as all testing methods used so far (Walmart & pool store) indicate it is low (less than 20). Of course, the pool store told me not to worry about it. What a joke.
    25,000 gallons
    Hayward sand filter
    IG Vinyl pool

  11. Back To Top    #11

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    Re: Newbie with a cloudy pool

    If you can't see the bottom, then you can't see (and therefore rescue) a child on the bottom. Unless you can see the bottom clearly, nobody should be in the pool. Certainly not children. Sorry, but it's just not safe, regardless of chlorine level.
    20k gallon IGP
    Plaster over gunite
    3/4 hp Hayward pump
    Purex Triton DE filter
    TF100 test kit w/ speedstir

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    Re: Newbie with a cloudy pool

    I know that, the children in question are new swimmers and only go in with life jackets on.
    25,000 gallons
    Hayward sand filter
    IG Vinyl pool

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    frogabog's Avatar
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    Re: Newbie with a cloudy pool

    I don't think you're done shocking, so be careful with that CYA addition because higher CYA means higher shock levels needed (more expensive). If you're under 20 but over 10, great. Add 10ppm worth (use http://poolcalculator.com to determine how much to add) and you won't be over 30ppm. When you're done shocking, then you can add a little more to get to 40 or so.

    What have you added to the pool so far in the form of solid chlorine (granular or tablets)? If you can quantify what's been added to the pool already you might be able to calculate CYA under 20 so you have a better idea of how much to add right now.
    Where kids swim in 54 degree water, turn blue, and giggle happily cuz they got a POOL!
    Year 3 BBB -15' x 48" Intex Metal Frame - Was using (2) 1000gph Intex cartridge filters (see Full time pumping Intex). 2012, converted to 1600gph and sand filter+SWG = Sand filter love affair!
    Don't waste time and energy looking for a better value on test kits, the TF100 is the best deal around. I did the looking and spent the extra money, but you don't have to make the same mistake. Just go here: TFTestkits. I use Pool Calculator for min/max, and shocking chlorine levels.

  14. Back To Top    #14

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    Re: Newbie with a cloudy pool

    The only solid I have added is two 1 lb bags of granular shock, as I had run out of liquid chlorine and wanted to keep shocking it. Here is where I am confused: higher CYA means higher shock levels and more expense, I get that. So should I just keep shocking it and once I pass the overnight test, THEN worry about raising the CYA for maintenance? I'm learning lots but soooo much more to learn!
    25,000 gallons
    Hayward sand filter
    IG Vinyl pool

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    Re: Newbie with a cloudy pool

    I don't think I made my thoughts clear. If I have low CYA, my shock level is lower. But if the sun keeps burning the chlorine off quickly, I'll have to keep adding more to keep it at shock level. So which is better? Or am I totally missing something?
    25,000 gallons
    Hayward sand filter
    IG Vinyl pool

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    Re: Newbie with a cloudy pool

    It is a bit confusing...If you believe you 24 ppm CYA results from the HTH kit, then continue to use that for your shock level. What was the granular shock you used? You may be continuing to add CYA to your pool with that. I would stop using that stuff!

    If you have the ability to check every hour, do that and add enough chlorine to always keep above you shock level (what is your target?). If you have to longer between checking, then go higher on your chlorine additions to stay above the minimum shock level.

    You may want to check CYA again in a day or two, to make sure you have your shock levels right.

    I would not adjust CYA until you are completely finished with the shocking process. You are done when:
    1. CC is 0.5 or lower;
    2. An overnight FC loss test shows a loss of 1.0 ppm or less;
    3. And the water is clear.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  17. Back To Top    #17

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    Re: Newbie with a cloudy pool

    Ah, but that is my problem. I am waiting for a good Taylor test kit, the one I have doesn't measure over 5 and my target shock level is 12. Without being able to know for sure my FC number, I am afraid I am just wasting my money and chlorine trying to "guess". But I also don't want to quit adding chlorine and set myself back further.
    25,000 gallons
    Hayward sand filter
    IG Vinyl pool

  18. Back To Top    #18
    linen's Avatar
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    Re: Newbie with a cloudy pool

    Quote Originally Posted by Tanya Marie
    Ah, but that is my problem. I am waiting for a good Taylor test kit, the one I have doesn't measure over 5 and my target shock level is 12. Without being able to know for sure my FC number, I am afraid I am just wasting my money and chlorine trying to "guess". But I also don't want to quit adding chlorine and set myself back further.
    You can do a dilution and use your current test kit until the better one comes. Since you target shock is ~12 ppm FC (for CYA of 24 ppm), I would do a 3:1 dilution, where that is 1 part pool water and 3 parts chlorine free water (distilled, DI, etc.), then you results will be what your current test indicates X4. So if you test reads ~3 ppm, your actual level will be 12 ppm. Be careful of using your tap water for dilution, it may be chlorinated. This is not a good long term testing method.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  19. Back To Top    #19

    Re: Newbie with a cloudy pool

    Quote Originally Posted by Tanya Marie
    I don't think I made my thoughts clear. If I have low CYA, my shock level is lower. But if the sun keeps burning the chlorine off quickly, I'll have to keep adding more to keep it at shock level. So which is better? Or am I totally missing something?
    You are understanding perfectly.

    Yes, you are trying to catch the best midpoint here, CYA low enough that shock level is not astronomical, but CYA high enough that you don't lose it all to the sun.

    That is why we suggest something like 30 pm CYA. At 0 - 10 CYA it is easy to get chlorine to shock level but the sun takes all the chlorine in a matter of hours as the algae grows all day long. Not making progress that way.

    At CYA 50+ you have good protection from the sun, losing only maybe 25% or less, but, whew, 25% of those big numbers is still a lot of bleach.

    So the midpoint is around 30 ppm CYA. You still lose maybe 50% to the sun in a day, but the total values are low enough that you still are fighting algae all day as well as all night.
    23,000 gallon in ground pool with rock waterfall and spillover spa, Aqualink control system, Polaris 380 cleaner, Purex Triton Clean&Clear Plus cartridge filter. Located in The Woodlands, Texas.

    Pool owner since Nov 2008, Trouble Free since April 2009. Happy to help when I can.

  20. Back To Top    #20

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    Re: Newbie with a cloudy pool

    Update: I guess I just needed to give my filter time to do its job. That and my guess work is doing ok too because this morning I can see a dive toy in the shallow end and I was able to visually vacuum dirt off the steps. Getting there!
    25,000 gallons
    Hayward sand filter
    IG Vinyl pool

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