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Thread: Testing chlorine while slamming

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    Unhappy Testing chlorine while slamming

    Good morning! I have looked and didn't see the answer so I'm hoping someone can help me. I am in the process of slamming my pool. My question is, do you test the chlorine using the normal method? My CYA is about 55 so, for a 15k gal pool, that puts my shock level at 22. That is over 100 drops of reagent for a 22ml sample! If I'm going to test it every few hours - or even a few times a day, that is a lot of reagent. Granted, I bought the big bottle, but I just want to make sure I'm not being a dummy about this. I guess using the 10 ml sample would be about half the drops -or am I thinking of this backwards?
    15K gal, Sharkline Heritage 18x33 AGP, Sta-Rite Dynamo 1HP 2-Speed Pump, Pentair Clean & Clear 150 sf Cartridge Filter. Installing May/June, 2013.

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    JoyfulNoise's Avatar
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    Re: Testing chlorine while slamming

    Use the 10mL sample size for a 0.5 ppm/drop precision. That's more than enough precision for a SLAM.
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    Re: Testing chlorine while slamming

    Thanks! 40-50 drops still seems like quite a bit so I just wanted to make sure I was doing it correctly. One more question, is it best to run the filter on high or low while slamming?
    15K gal, Sharkline Heritage 18x33 AGP, Sta-Rite Dynamo 1HP 2-Speed Pump, Pentair Clean & Clear 150 sf Cartridge Filter. Installing May/June, 2013.

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    JoyfulNoise's Avatar
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    Re: Testing chlorine while slamming

    Quote Originally Posted by Sybrash View Post
    Thanks! 40-50 drops still seems like quite a bit so I just wanted to make sure I was doing it correctly. One more question, is it best to run the filter on high or low while slamming?
    Low is fine. The purpose is to keep the water circulating so that the plumbing sees the SLAM level FC.
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    Join Date
    May 2013
    Location
    Cedar Creek, TX
    Posts
    10

    Re: Testing chlorine while slamming

    15K gal, Sharkline Heritage 18x33 AGP, Sta-Rite Dynamo 1HP 2-Speed Pump, Pentair Clean & Clear 150 sf Cartridge Filter. Installing May/June, 2013.

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