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Thread: Wacky test results right now

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    bbrock's Avatar
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    Apr 2014
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    Wacky test results right now

    I am having some wacky test results right now and I'm not sure if it is the result of cold water (approx 45 degrees currently) or actual algae as my combined CC has been b/w 0-1. Results have varied. Problem is, my water is very clear. In another thread, Jason, you state that pH and FC should be performed before the water warms up. Why is this?
    19k gal IG plaster, built '70s, probably resurfaced in '80s-'90s; Blue Haven Hayward filter C4520BHMB (Filbur FC-1275 cartridges); Hayward MaxFlo sp2302 VSP 1.5hp; 6 solar panels 288. sq. ft. total (142"x47.5" ea.) on 1 story hm; Pentair Compool LX220 Solar Controller; FlowVis flow meter; Maytronics Dolphin S200; AG 300 gal AquaTerra spa; TF-100 & Speedstir; gone: Pentair Challenger 3/4 HP 1 speed; Polaris 280

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    JasonLion's Avatar
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    Re: Wacky test results right now

    Changes in water temperature directly change the PH. For the chlorine test, you start losing chlorine from the sample as soon as it comes out of the pool, so you don't want to wait very long. This has to do with surface to volume ratios. Pools have lots of volume, but not so much surface area, while water sample containers have way less volume and comparatively far more surface area, so it is way easier for chlorine to outgas.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    bbrock's Avatar
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    Apr 2014
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    Re: Wacky test results right now

    Tx Jason for the explanation. Makes sense.
    19k gal IG plaster, built '70s, probably resurfaced in '80s-'90s; Blue Haven Hayward filter C4520BHMB (Filbur FC-1275 cartridges); Hayward MaxFlo sp2302 VSP 1.5hp; 6 solar panels 288. sq. ft. total (142"x47.5" ea.) on 1 story hm; Pentair Compool LX220 Solar Controller; FlowVis flow meter; Maytronics Dolphin S200; AG 300 gal AquaTerra spa; TF-100 & Speedstir; gone: Pentair Challenger 3/4 HP 1 speed; Polaris 280

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