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Thread: Rain really did a number on the pool - advice?

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    Rain really did a number on the pool - advice?

    On Thu night we had 2" on rain in 45 minutes that has turned the pool very cloudy and slightly green. Had to drain 2" out.
    Pump is working fine, normal pressure. Water has been crystal clear up until then, with good numbers.
    I was reading that rain can bring a lot of crud down out of the sky and into the pool.

    Ran numbers yesterday:
    FC - 1
    CC- 0
    Alk - 60 (has usually been 70-80)
    Ph - 7.8 (has never varied from 7.5)
    CYA - 40

    Added bleach, baking soda and acid. This morning:
    FC - 3
    CC - 0.5
    Alk - 80
    Ph - 7.5
    CYA - 40

    Am I right in thinking to shock it and then wait for the cloudyness to work it's way out?
    (The only times this pool has ever looked like this is during Spring cleaning, and then it clears in one day.)
    new in 2009 - 18' x 36' IG vinyl liner, 23,300 gallons
    24" sand filter w/ 1.5hp pump
    Polaris 280 cleaner w/ booster pump

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    alanpaul's Avatar
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    Re: Rain really did a number on the pool - advice?

    Yes, I'd guess that FC level of 1 gave the organics a chance to live long and prosper. Shock time.
    And, as you know it takes sand longer to filter out the microscopic bits, can you add a bit of DE through the skimmer to assist?

    We try to add a little chlorine before the rain, assuming we're home to do so.

    Do you maintain your chlorine at a high enough level to give you some wiggle room (6-7) in such situations, or do you generally keep it on the low end (3-4)?

    If low end, you may wish to increase your level somewhat to avoid such events.

    Good luck.
    Alan in Wellington, FL - near West Palm Beach
    15,200 gal IG, painted plaster, 1988; 200 SqFt cartridge filter, 2013; 1.5 HP 1-speed pump (uprated), 2005; heat pump, 2005;
    soon to repair (dead) SWG AquaRite T-15 cell, 2005, and replace (dead) suction-side cleaner, 2005.
    Almost everything died this winter 2012-'13, and I know we shouldn't complain... but, Arrgh!

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    Re: Rain really did a number on the pool - advice?

    I was actually cutting grass when this storm hit. It was incredibly fast and shut down roads in the area!

    I ran Borates last year which I should probably do again this year. Gave me a little wiggle room.
    Yes, I have kept it right at 4, and it bit me.
    Time to get my Borate mix in the pool and bump my chlorine up.

    Thanks much for the advice.
    new in 2009 - 18' x 36' IG vinyl liner, 23,300 gallons
    24" sand filter w/ 1.5hp pump
    Polaris 280 cleaner w/ booster pump

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    harleysilo's Avatar
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    Re: Rain really did a number on the pool - advice?

    Quote Originally Posted by lances4803
    I was actually cutting grass when this storm hit. It was incredibly fast and shut down roads in the area!

    I ran Borates last year which I should probably do again this year. Gave me a little wiggle room.
    Yes, I have kept it right at 4, and it bit me.
    Time to get my Borate mix in the pool and bump my chlorine up.

    Thanks much for the advice.
    Borates aren't supposed to dissapear, have you measured them this year?
    18'x43' Sport Pool
    19,000 Gallons Vinyl Liner 3'-3.5'-4'
    SWCG and D.E. Filter
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    Re: Rain really did a number on the pool - advice?

    Quote Originally Posted by lances4803
    On Thu night we had 2" on rain in 45 minutes that has turned the pool very cloudy and slightly green. Had to drain 2" out.
    Pump is working fine, normal pressure. Water has been crystal clear up until then, with good numbers.
    I was reading that rain can bring a lot of crud down out of the sky and into the pool.

    Ran numbers yesterday:
    FC - 1
    CC- 0
    Alk - 60 (has usually been 70-80)
    Ph - 7.8 (has never varied from 7.5)
    CYA - 40

    Added bleach, baking soda and acid. This morning:
    FC - 3
    CC - 0.5
    Alk - 80
    Ph - 7.5
    CYA - 40

    Am I right in thinking to shock it and then wait for the cloudyness to work it's way out?
    (The only times this pool has ever looked like this is during Spring cleaning, and then it clears in one day.)
    hi, not being far from your situation/location. I had 2"+ and since daily I just use test strips noticed small little bubbles
    on my side wall/bottom even with my FC near 7, SWG usually has it nearer 10 FC. I added bleach and proceeded to brush
    so I might miss the bloom. it was just my guess those bubbles were algae starting, you might keep an eye out
    and stay a step ahead. funny thing a 1/2 mile away just North, got no rain. yep needs vacuum too again.
    18X36 Grecian 24400 est., pacfab sand Triton II, 1.5hp AOSmith, clormatic 2

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    Mod Squad woodyp's Avatar
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    Re: Rain really did a number on the pool - advice?

    Every time it's gona rain here, I bump up the chlorine and expect to vacuum the next day. We need to have a "dirtiest rain" contest.
    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
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    Richard320's Avatar
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    Re: Rain really did a number on the pool - advice?

    What is this thing you call rain?

    We've had about 5" in Los Angeles in the last year.

    It's not helping my Calcium reduction at all.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    UnderWaterVanya's Avatar
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    Re: Rain really did a number on the pool - advice?

    Quote Originally Posted by Richard320
    What is this thing you call rain?

    We've had about 5" in Los Angeles in the last year.

    It's not helping my Calcium reduction at all.
    15" in the last three months here...

    Sent via Tapatalk...
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

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    topher's Avatar
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    Re: Rain really did a number on the pool - advice?

    as I'm sitting here reading this.. thinking I should add chlorine to the pool before the dark cloud gets here.. I hear the heavens open up. this sux, just cleared pool a couple days ago.
    13500 gallon AG, build late 90's, Hayward S220T sand filter,1Hp aqua coastal
    Gasser BBQ broilmate 155154 LP, Smoker CGK (akorn)

    ,

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    alanpaul's Avatar
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    Re: Rain really did a number on the pool - advice?

    Richard320,
    We used to live in L.A. (Eagle Rock) and appreciated those 5 inches of rain each year. Now we're living in South Florida where we get 5 feet of rain per year.

    Well, it's usually green here, but hot and steamy.

    Do you ever drive over to check the chemistry at Raging Waters?
    Alan in Wellington, FL - near West Palm Beach
    15,200 gal IG, painted plaster, 1988; 200 SqFt cartridge filter, 2013; 1.5 HP 1-speed pump (uprated), 2005; heat pump, 2005;
    soon to repair (dead) SWG AquaRite T-15 cell, 2005, and replace (dead) suction-side cleaner, 2005.
    Almost everything died this winter 2012-'13, and I know we shouldn't complain... but, Arrgh!

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    Mod Squad woodyp's Avatar
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    Re: Rain really did a number on the pool - advice?

    Must be all Richards dust being dumped in my pool from rain. Buy a waterhose man!
    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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    Richard320's Avatar
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    Re: Rain really did a number on the pool - advice?

    Quote Originally Posted by alanpaul
    Do you ever drive over to check the chemistry at Raging Waters?
    You know, I'm aware it's there, but I've never actually seen the place!
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Rain really did a number on the pool - advice?

    Quote Originally Posted by Richard320
    What is this thing you call rain?

    We've had about 5" in Los Angeles in the last year.

    It's not helping my Calcium reduction at all.
    Nashville TV last week quoted 32" rain since Jan 1st.
    50 miles South I was lucky and only got about 10......
    18X36 Grecian 24400 est., pacfab sand Triton II, 1.5hp AOSmith, clormatic 2

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    Re: Rain really did a number on the pool - advice?

    Quote Originally Posted by harleysilo
    Borates aren't supposed to dissapear, have you measured them this year?
    Borates = 15
    I knew they were low because of the amount of rain we have had since pool clsoing last year. I have drained a LOT of water since then, taking chemicals with it.
    new in 2009 - 18' x 36' IG vinyl liner, 23,300 gallons
    24" sand filter w/ 1.5hp pump
    Polaris 280 cleaner w/ booster pump

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    UnderWaterVanya's Avatar
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    Re: Rain really did a number on the pool - advice?

    Quote Originally Posted by topher
    as I'm sitting here reading this.. thinking I should add chlorine to the pool before the dark cloud gets here.. I hear the heavens open up. this sux, just cleared pool a couple days ago.
    I don't add anything to the water ahead of a storm - you never really know what will happen in terms of volume of water. I wait until after and usually do nothing until the next time I add chlorine (just after the sun is off the pool around 6pm.). Even with significant (several inches rain) I don't find I need to adjust much.




    - Sent using Tapatalk
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

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    Smykowski's Avatar
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    Re: Rain really did a number on the pool - advice?

    Keep your FC a little higher, I think that's the issue. As a percentage of total volume, even 2" of rain should not be enough to jack up your chemistry. If you have problems after rain, it's because you're tottering on the edge of a problem to begin with. I pray for rain because I stole Richard320's idea and divert rainwater from my roof to fill my pool. I'm not paying out of the tap if it falls for free from the sky.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    Charlie_R's Avatar
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    Re: Rain really did a number on the pool - advice?

    No gutters on our house. No free water here. If/when we do put gutters up, you can bet there will be catch barrels at every downspout!
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

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