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Thread: Pool mudded out after 10" rain

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    MiaOKC's Avatar
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    Pool mudded out after 10" rain

    Hello - I have been reading and mostly practicing BBB since we first bought our house in Dec 2011. Thank you so much for everyone who shares their knowledge and time on this board, it is really great!

    This year, we decided to keep our pool open over the winter (in OKC) and equipped it with a freeze-guard timer which worked well. There were a really cold days that had us scooping leaves in icy temps over the winter (DH was not pleased) but I was much happier to look out the windows for 6 months of the year and not look at a swamp!

    Anyway, we didn't have a "start-up" this year per se, but I did make the leap into the big test kit so was happy doing all the tests and fine-tuning some of our guesswork from last summer. (CYA being the biggie that we relied on the Pool Store to test for us last year.)

    On Friday the 31st, our pool looked like this:



    Then we got 10" of rain in 10 hours on Friday afternoon/overnight, and lots of dirt swept down from yard above the retaining walls and muddied the pool. I went out in the storm to pump off 5" of water that night, and while we slept, we got another 5", which overflowed one skimmer on the lower side of the pool.



    And this is what it looked like the morning after:



    We immediately pumped off about 5 more inches of water and headed to the store to stock up on bleach. We brought the pool to shock level (12ppm for us, as our CYA is somewhere between 20-30 -- that had been my previous chore to bring that up from less than 10 and have added 8lbs of stabilizer over the last few weeks, in 4lb increments one week apart. We get a lot of evaporation from wind - sweeping down the plains and whatnot - and have to backwash and vac to waste enough on our treed lot that our problem is keeping CYA up high enough with topping off the pool a few inches a week - hence the floating ducks which are currently empty but we do add pucks to for the added stabilizer.) DH convinced me to add a bottle of clarifier that we'd had on hand from 2012's swamp opening, as well, which I know isn't a core principle of BBB but what can I say, I was outvoted. We have a sand filter, FYI.

    So then it looked like this by about noontime, the day after.



    We did turn the pump off that night to see if the dirt would settle more to the bottom so we can vac to waste. It didn't appear to help the clarifier work much being off overnight, so we went back to running pump 24/7. We did run our robot a few times during the shocking process (even though the robot mfr. doesn't recommend) since we couldn't see anything in the bottom to vacuum. The robot did pull up a lot of mud, but I think might have been stirring it up, too.

    Four days later, we'd seen some of the dirt settle in the shallow end. We could see the shallow end floor although the water was still very cloudy. We let the FC drop to 6ppm (another few inches of rainfall), and the CC was 0 on Monday. On Tuesday we had this:





    We decided that since we could see the bottom of the shallow end, we would vac to waste at least on that side. On Wed morning, I thought I could see a slight greenish cast to the water, and when I tested I had 6 FC and .5 CC so brought it up to 12 FC again and have kept it there since. I neglected to take a pic right after we vacuumed to waste Tuesday, but it was very noticeably bluer. We're keeping it at shock level, but we are not brushing because I don't want to stir up the dirt that I'm trying to let gravity settle so I can vacuum it out.

    This is how it looks this morning (Friday, almost a full week after the initial mud dump):



    This morning, I could see the shallow bottom pretty clearly (it needs another vacuum, you can see dirt right at the edges) and in the deep end (8 ft, I think) I am just starting to be able to see the outline of the main drain (and a few leaves, actually). So we'll be vacuuming again in the morning.



    Thanks for all the posts in the forum that I've been searching repeatedly as we go along. Of course, I'd hoped to have my pool sparkling again within a few days but we can't have everything we want, I guess! Posting this just to give others an idea of timeline, and will update as we hopefully get totally clear soon. I'm sure I need to add more CYA as I've had to pump out so much water and our pool has been so diluted with almost 15" of rain in the last week. Summer temps are supposed to be here next Wednesday, so am hoping swimming will be back on the agenda! I heard a psychic (of all things) on the radio the other morning telling someone in our area that they would need to drain and refill their pool because of the mud from the rains. Just goes to show - TFP beats a psychic just about every time.

    Please feel free to chime in with input if you see anything we can do to speed the process. Oh, I've had to backwash a few times this week, too, but not too much. Our main drain doesn't work, it's been divorced from the system at some time in its 40 year history, so it's not pulling the dirt to the bottom and into the pump, which is probably helping as far as how often to backwash, but not helping in the speed of clearing it up. I did wonder about the brushing, but just don't want to suspend all the mud particulate in the water again, especially since I really don't think we have algae... just good old dirt.

    P.S. When we get to do our dream pool renovation in a few years, we want to move the retaining walls back from the pool and install drainage along the walls, to help prevent things like this happening and make it easier to work with the scoop/vac/net around the pool. Actually would love to do that part sooner than later, but don't know if we can move just the walls without opening the can of worms of coping, tile, plaster. And since you can't get a pool guy to your house in our area (four calls to four different friend-recommended companies and still waiting months later), I guess we'll just have to wait it out.
    35,000 gallon gunite pool, semi-T-shaped, 29x15 shallow end and 16x22 deep end, built in the mid-1970s and renovated 2013-2014 // Polaris 9300 Sport robotic cleaner // Taylor K-2006 ... Learning as we go and so grateful to everyone here for their help! Our reno thread

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    Mod Squad jblizzle's Avatar
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    Re: Pool mudded out after 10" rain

    Nice work

    I just wanted to note that evaporation will not lower the CYA as you seemed to indicate. Pumping water out after all the rain or for backwashing will lower the CYA, but just adding water back into the pool after evaporation will result in the same CYA you started with prior to the evaporation.
    Jason, TFP Moderator
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    Samantha_in_AL's Avatar
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    Re: Pool mudded out after 10" rain

    It's getting better by the day. Keep up the good work!
    AG 18' X 52" Round Pacifica Pool w/ Metal Diamond Unibead Liner. Installed in March 2007.
    2.5 HP Baquapure 2 Speed Pump, 200 GPM Waterway ProClean Cartridge Filter System.


    Former Baquacil user
    Converted to BBB in Fall of 2009 - Now I have a truly trouble free pool!

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    MiaOKC's Avatar
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    Re: Pool mudded out after 10" rain

    Thanks, Jason. I meant to indicate that having to top off the water so often (just as a matter of course for our household, this is due to the cumulative effects of backwash, evaporation and vac to waste) to the tune of several inches a week lowers our CYA over the season because we are refilling with plain tap water. Has that not been your experience?
    35,000 gallon gunite pool, semi-T-shaped, 29x15 shallow end and 16x22 deep end, built in the mid-1970s and renovated 2013-2014 // Polaris 9300 Sport robotic cleaner // Taylor K-2006 ... Learning as we go and so grateful to everyone here for their help! Our reno thread

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    Re: Pool mudded out after 10" rain

    Way to turn that thing around!

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    Mod Squad jblizzle's Avatar
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    Re: Pool mudded out after 10" rain

    The CYA will only go down if you are physically removing water from the pool (backwash, vacuum to waste, splashout, etc). If you did none of these and only had to replace water that evaporated, then the CYA should not really have been affected.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    MiaOKC's Avatar
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    Re: Pool mudded out after 10" rain

    Ah, gotcha. So evaporation is so minimal that topping off for evaporation only is not enough dilution to affect the CYA levels, while backwashing and vacuuming to waste requires more substantial water addition that might affect CYA level. I need to get more reagent anyway, so will do that this weekend!
    35,000 gallon gunite pool, semi-T-shaped, 29x15 shallow end and 16x22 deep end, built in the mid-1970s and renovated 2013-2014 // Polaris 9300 Sport robotic cleaner // Taylor K-2006 ... Learning as we go and so grateful to everyone here for their help! Our reno thread

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    Mod Squad jblizzle's Avatar
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    Re: Pool mudded out after 10" rain

    No. The CYA is mixed in the pool water. When you physically remove water, you are removing some of the CYA and then replacing that with water with 0 CYA ... thus now the CYA in the pool is less.

    When the pool water evaporates, the CYA stays in the pool and the concentration actually rises (just like salt for example). Say you have 50ppm of CYA in the pool and then let 50% of the water evaporate, if you measured the CYA in the water that was left, it would be 100ppm. Now when you fill back up with tap water, the CYA is diluted back to the original 50ppm.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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    MiaOKC's Avatar
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    Re: Pool mudded out after 10" rain

    Oh, cool. Didn't know CYA got more concentrated (don't have a salt pool so wasn't familiar with that phenomena). Thanks for explaining!
    35,000 gallon gunite pool, semi-T-shaped, 29x15 shallow end and 16x22 deep end, built in the mid-1970s and renovated 2013-2014 // Polaris 9300 Sport robotic cleaner // Taylor K-2006 ... Learning as we go and so grateful to everyone here for their help! Our reno thread

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    MiaOKC's Avatar
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    Re: Pool mudded out after 10" rain

    Realized I never posted a final "after" picture to close out this thread and report how long it took me to get a clean pool again ... so here goes.

    May 31 - flood
    June 1 - clean up begins. Shock, shock, shock some more. Run robot. Throw some clarifier in and turn filter off overnight to see if that helps. It doesn't.

    June 2 - Shock and run robot and run filter continuously
    June 3 - Continuous filter. Stop the robot, think he's stirring the dirt up. Shallow end floor begins to be visible, water still very cloudy. Decide to vac to waste and it's much better after we do that.
    June 4 - Starts to go green (instead of brown) on me, shock level had dropped. Hadn't been too diligent with my level, so it's my own fault. Caught it and brought it up again.

    June 5 & 6 - Shock and filter.
    June 7 - Blue and cloudy. Keep shocking, keep filtering. This is a marathon, not a sprint.

    June 8 - Shocking, vac to waste again. It's beginning to look like my pool again! We actually get in the water after the vac session. I float around on my pool floatie and drink wine, too. My fave pool activity. If I had kids, I might not want them swimming at this time, because I don't trust the water enough to put my face under.


    June 9 - Looks a little cloudy, but beautiful blue. We're in the home stretch. Shock and run robot. Robot is still picking up very fine silt, so might as well run it.


    June 10 & 11 - Try the OCLT but have some user error.
    June 12 - Takes until June 12 morning to successfully work out our testing issues and pass the OCLT, so stop shocking and let the pool drift back down to normal FC. Swimming again!
    June 13 - Forgot to take a pic yesterday, but here's the after:


    June 15 - Big pool party at our house to celebrate Grandma's 95th birthday, pool is crystal clear, very happy. So busy I forget to take a picture of the pool water, but here it is on the 18th, just as clear as it was after my OCLT pass photo on the 13th.


    Overall, it took me almost two weeks to completely clear. If I have to do it again, I will be maniacal about my first week shocking, as I think I didn't stay on it as well as I should have and I'm sure that set me back at least a few days in the timeline overall.
    35,000 gallon gunite pool, semi-T-shaped, 29x15 shallow end and 16x22 deep end, built in the mid-1970s and renovated 2013-2014 // Polaris 9300 Sport robotic cleaner // Taylor K-2006 ... Learning as we go and so grateful to everyone here for their help! Our reno thread

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