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Thread: Shocking Pool and Looking for Light at the End of the Tunnel

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    Join Date
    Jul 2012
    Peoria, AZ

    Shocking Pool and Looking for Light at the End of the Tunnel

    Hello all,

    Since yesterday morning I've been shocking my pool and taking readings approximately every 4-5 hours. I've gone through 8 - 182 oz bleach bottles and 64 oz of liquid chlorine. I think I can see the light at the end of the tunnel but wanted some feedback. I performed the OCLT last night and had a measurement of FC at 36 ppm around 11 pm. I woke up at 5 am to retest and my FC was 25 ppm, meaning I've lost 11 ppm in 6 hours overnight! However, I added another bottle of 182 oz bleach at 5 am this morning that should have added about 9 ppm to my FC. I retested again at 11 am and my FC was 27 ppm which means it dropped only 7 ppm in about 6 hours of sunlight. I think that is a positive sign and I may have killed off whatever was living in the pool, I just need another OCLT to confirm.

    My question is, would it be alright to drop below shock levels this afternoon to swim? It's quite hot here in AZ, the water is in the 80's because I just refilled it 36 hours ago, and the water looks sparkling clean and inviting! I can kick it back up to shock levels tonight for OCLT if need be.

    Thank you again for your help! I plan on supporting this site soon! It's already provided much more information than 2.5 years at the pool store yielded
    9500 Gallons, IG, Pebble, Cartridge filters, 1.5 HP Pump, Built 2005 - Peoria, AZ

  2. Back To Top    #2
    frogabog's Avatar
    Join Date
    Jul 2010
    Portland, Oregon

    Re: Shocking Pool and Looking for Light at the End of the Tu

    It's safe to swim at or below shock level.

    As far as dropping it below shock level to swim... only do that if you would like to experience a backstep in the shocking process. Dropping below shock level never did anyone, or any pool any good while shocking.

    Maintaining shock level while people are in the pool can be done by asking everyone to get out for a while, adding bleach, and then asking some of them to help you swirl/mix it with skimmers/oars or whatnot. The pump can mix the bleach however in half an hour so if they can wait that long no one has to help mix the pool.
    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.

  3. Back To Top    #3
    phipsi1237's Avatar
    Join Date
    Jan 2011
    North Las Vegas, NV

    Re: Shocking Pool and Looking for Light at the End of the Tu

    Stick with it. Don't get discouraged. My shock process a couple of months ago took a week with about 35 182oz jugs of bleach.
    14.5K gal Plaster IGP, Intelliflo VS, EasyTouch 8, SWG, IntellipH, Clear and Clean 420 Cartridge Filter, Attached Spa, H400IDL2 NG Heater

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