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Thread: Pool caught me napping - UPDATE, now in SLAM mode

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    Pool caught me napping - UPDATE, now in SLAM mode

    So a month ago, I posted a thread sharing how much CL I put in my pool daily and asked how much others are doing so. Was cruising on 2-3 ppm or so, and I thought for my pool it was exactly a quart a day.

    But what I didn't notice was that my CL demand was slightly more than a quart, maybe a quart and a half on a heavy use/sunny day... so my chlorine kept creeping down. Was at 6-8 ppm, then 5-7 a few days later, then 4-6 another few days later. But the change was so gradual that I didn't even notice... until today, when I tested 2.5 FC (CYA at 50). Whoops! Dumped a gallon in there to bring it back up to around 8.

    Time for an OCLT to check to see if any algae found a new home, but I'm hoping bringing FC to 8 nipped it in the bud! This TFP method is really easy, but you have to be on top of it every day! I can understand why people go the SWG route.
    IG gunite pool size: 12,500 gallons - includes spa with spillover, Polaris vacuum cleaner, Ultrapure Ozonator, inline tab chlorinator that I no longer use
    Filter: Hayward Swimclear Model #4030, 4-Cartridge Filters
    Pump: Century, 2 HP with a Hayward 6060 booster pump
    Date of build: March-April 2014 *NEW* : Test kit: TF-100

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    Richard320's Avatar
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    Re: Pool caught me napping

    If a person is in good health, a slight vitamin deficiency won't hurt him for a day or two. But if the person is in fragile health, then a little malnutrition can trigger illnesses. Your pool is like a living thing. I doubt you did any damage.
    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: Pool caught me napping

    OCLT, 1.0 ppm loss overnight. CC is 0. Still OK for now.

    I'm starting to think I should throw out those Taylor K1000 CL reagents (but keep the pH and TA reagents)... last night I tested only 1.5 using those reagents (pink color matching test showed a shade between 1 and 2), but the TF100 kit got me a 3.5 (7 drops).

    It does show that with test kits, you get what you pay for and you can't always trust the color matching tests.
    IG gunite pool size: 12,500 gallons - includes spa with spillover, Polaris vacuum cleaner, Ultrapure Ozonator, inline tab chlorinator that I no longer use
    Filter: Hayward Swimclear Model #4030, 4-Cartridge Filters
    Pump: Century, 2 HP with a Hayward 6060 booster pump
    Date of build: March-April 2014 *NEW* : Test kit: TF-100

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    weatherillgrp's Avatar
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    Re: Pool caught me napping

    Best advice I ever got was from Richard. Feed it every day!..My pool has been balanced and crystal clear since I have joined TFP and followed their advice. Now I am trying to tell my neighbors the good news, however they are still pumping 3" tabs into their pool. About every 5th or 6th day they are cloudy.
    18K gal, IG vinyl, 1 hp single phase Pentair Pinnacle pump part 7-177474-01, Star-Rite Cristal Flow Filter model T-240BP-1, 266,000 BTU Raypac gas heater model PR266AENC, Coverstar electric safety cover, Hayward Navigator Pool Vac, Pentair model 300 Auto Chlorine Feeder( not using). TF-100 Test Kit. Built June 2007

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    Butterfly's Avatar
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    Re: Pool caught me napping

    Cute title

    Ignore a flower and it will die

    Ignore a pool and it will come alive
    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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    Re: Pool caught me napping

    I find myself having to put in 2 quarts a day of 8.25% bleach. Initially I thought 1 quart a day was enough, but no. Maybe it's because of hot weather and no shade? I did have a lot of people in the pool over the past several days, so high bather load, too?

    At this rate, I'm going to be spending $50 per month on bleach alone! Oh well, better than spending $200 a month at the pool store...
    IG gunite pool size: 12,500 gallons - includes spa with spillover, Polaris vacuum cleaner, Ultrapure Ozonator, inline tab chlorinator that I no longer use
    Filter: Hayward Swimclear Model #4030, 4-Cartridge Filters
    Pump: Century, 2 HP with a Hayward 6060 booster pump
    Date of build: March-April 2014 *NEW* : Test kit: TF-100

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    Re: Pool caught me napping

    Yep, tested a whooping 2.5 CC, with FC at only 1.

    Have to SLAM. Dumped 2.5 gal in to bring FC to SLAM level (18).

    I'm amazed how quickly CC jumps in such a short time after letting FC go below minimum.

    I underestimated my pool...

    At least the water is clear, and I wouldn't have guessed that an algae bloom is just beginning.
    IG gunite pool size: 12,500 gallons - includes spa with spillover, Polaris vacuum cleaner, Ultrapure Ozonator, inline tab chlorinator that I no longer use
    Filter: Hayward Swimclear Model #4030, 4-Cartridge Filters
    Pump: Century, 2 HP with a Hayward 6060 booster pump
    Date of build: March-April 2014 *NEW* : Test kit: TF-100

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    Re: Pool caught me napping - UPDATE, now in SLAM mode

    OCLT 1.5 ppm overnight. From 20 to 18.5. Ahh so close. CC is 0, water is clear.

    Should take 1 more day of SLAM.

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    Re: Pool caught me napping - UPDATE, now in SLAM mode

    Failed the OCLT again. 4 ppm loss from 22 to 18 (with 50% diluted pool water to save reagents...)

    The SLAM continues. Stubborn algae.
    IG gunite pool size: 12,500 gallons - includes spa with spillover, Polaris vacuum cleaner, Ultrapure Ozonator, inline tab chlorinator that I no longer use
    Filter: Hayward Swimclear Model #4030, 4-Cartridge Filters
    Pump: Century, 2 HP with a Hayward 6060 booster pump
    Date of build: March-April 2014 *NEW* : Test kit: TF-100

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    Butterfly's Avatar
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    Re: Pool caught me napping - UPDATE, now in SLAM mode

    You might as well post a pic for us

    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!

  11. Back To Top    #11

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    Re: Pool caught me napping - UPDATE, now in SLAM mode

    Here ya go. It ain't no swamp... I've already met 2 of the 3 SLAM criteria... CC is 0 and water never got green or cloudy to begin with. All I have to do is quell its unnecessary chlorine appetite.

    IG gunite pool size: 12,500 gallons - includes spa with spillover, Polaris vacuum cleaner, Ultrapure Ozonator, inline tab chlorinator that I no longer use
    Filter: Hayward Swimclear Model #4030, 4-Cartridge Filters
    Pump: Century, 2 HP with a Hayward 6060 booster pump
    Date of build: March-April 2014 *NEW* : Test kit: TF-100

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    Re: Pool caught me napping - UPDATE, now in SLAM mode

    Have you brushed behind the light/s?

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    Butterfly's Avatar
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    Re: Pool caught me napping - UPDATE, now in SLAM mode

    Quote Originally Posted by Abigail K View Post
    Have you brushed behind the light/s?
    .....pulled light from niche and cleaned, and exposed it to SLAM level? Scrubbed everything, nooks, crannies, skimmer throat, etc?

    Beautiful pool
    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!

  14. Back To Top    #14

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    Re: Pool caught me napping - UPDATE, now in SLAM mode

    Thanks Butterfly

    Yeah I brushed behind the lights, but it was somewhat below SLAM level at the time. Some cloudy white stuff came off, hard to tell if it's algae or plaster dust.

    I'll try the lights again later today. Will get at the skimmer throat, too.
    IG gunite pool size: 12,500 gallons - includes spa with spillover, Polaris vacuum cleaner, Ultrapure Ozonator, inline tab chlorinator that I no longer use
    Filter: Hayward Swimclear Model #4030, 4-Cartridge Filters
    Pump: Century, 2 HP with a Hayward 6060 booster pump
    Date of build: March-April 2014 *NEW* : Test kit: TF-100

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    Richard320's Avatar
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    Re: Pool caught me napping - UPDATE, now in SLAM mode

    You know, whatever organic debris is stuck in the pump strainer or the filter is sharing the same water and could be consuming your FC.
    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: Pool caught me napping - UPDATE, now in SLAM mode

    Does that mean I should wash the cartridge filters to get that organic debris?
    IG gunite pool size: 12,500 gallons - includes spa with spillover, Polaris vacuum cleaner, Ultrapure Ozonator, inline tab chlorinator that I no longer use
    Filter: Hayward Swimclear Model #4030, 4-Cartridge Filters
    Pump: Century, 2 HP with a Hayward 6060 booster pump
    Date of build: March-April 2014 *NEW* : Test kit: TF-100

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    Re: Pool caught me napping - UPDATE, now in SLAM mode

    Ok I scrubbed and did everything suggested but wash the filters. I measured my CYA level and was surprised to find it as low as 30. Normally it was at 45-50. Never drained, but had lots of splash out and some rain and evaporation/replacement with fill water, overflow, etc. Maybe this drop in CYA is to be expected with heavy usage? Or do I have a case of ammonia?

    On the plus side, it's much easier (and cheaper) to hit a SLAM target of 12 with a CYA of 30. I'll retest CYA in an hour to make sure it wasn't a fluke.
    IG gunite pool size: 12,500 gallons - includes spa with spillover, Polaris vacuum cleaner, Ultrapure Ozonator, inline tab chlorinator that I no longer use
    Filter: Hayward Swimclear Model #4030, 4-Cartridge Filters
    Pump: Century, 2 HP with a Hayward 6060 booster pump
    Date of build: March-April 2014 *NEW* : Test kit: TF-100

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    Re: Pool caught me napping - UPDATE, now in SLAM mode

    Retested CYA (yeah I couldn't wait another 45 minutes ha), and got between 20 and 30. It's definitely much lower than it is before. I'm going to use trichlor tablets to raise CYA over time, to about 40, then stop the chlorinator. I'll test CYA every 3 days or so, to make sure I don't overshoot my target.
    IG gunite pool size: 12,500 gallons - includes spa with spillover, Polaris vacuum cleaner, Ultrapure Ozonator, inline tab chlorinator that I no longer use
    Filter: Hayward Swimclear Model #4030, 4-Cartridge Filters
    Pump: Century, 2 HP with a Hayward 6060 booster pump
    Date of build: March-April 2014 *NEW* : Test kit: TF-100

  19. Back To Top    #19

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    Re: Pool caught me napping - UPDATE, now in SLAM mode

    Passed the OCLT! SLAM is over.

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    Re: Pool caught me napping - UPDATE, now in SLAM mode

    You didn't have the chlorinator on, did you?
    26' X 52" Intex Ultra Frame. Intex Sand Filter
    26' X 52 Intex Ultra Frame Install
    You can lead a horse to (clear) water, but you can't force him to swim in it!

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