Hi all. Think I am dealing with a Chlorine lock situation and could use some advice. Pool professionally opened on 4/21 and non-chlorine shock was added.
4/27 Tested FC 0.3 | CC 0 | CYA I put down at zero as water was crystal clear up to the top of test tube | pH off the charts basic | TA 125. Added 96oz of 12.5% chlorine | 79oz of 20* Muriatic. Ordered stabilizer.
4/28 Tested FC 0.4 | CC 1.6 | pH 7.2. Added 177oz of 12.5%. Ordered new DPD powder.
4/29-30 rain
5/1 Tested FC 0.1 | CC 2.4 | CYA 0 | pH 7.9 | TA 105 Added 4lb dry CYA (pillow case in front of return method) | 256oz of 12.5% (evening)
5/2 Tested (morning) FC 0.3 (!) | CC 3.0 | CYA 20ish | pH 7.4No additions.
Using Taylor k-2006 for testing and new SPD powder over last couple of days.
Pool water is very clear throughout and weather is chilly (though I optimistically fired up heater and am keeping water at 65 degrees). So my questions are:
1) could my 18k gal pool really be burning through this much chlorine? I added 2 gallons at 5:45 pm yesterday (overcast evening sunset at 8ish) and tested 0.3 ppm FC this morning (around 11:45am). Pool Math tells me I’d only need 1.5 gal to get to 10ppm I realize CYA is very low (still not sure why that would be since I didn’t drain/refill more than a few inches over winter. Could this explain such a big drop?
2) Do I need to add yet more Chlorine? I’ve added more than four gallons already. I’m not made of chlorine, you know. Bonus: just called supplier and they are SOLD OUT of chlorine.
3) most of the CYA was gone from pillowcase this morning but reading still only at 20. I’ve read that it takes longer to show up on test but does that mean I should wait to add more chlorine?
4) what’s up with CC going up and up? Do I need to just ad a ton of chlorine to break through? Pool store from which I purchased chems suggested adding 5gal all at once. This seems insane. Thoughts?
5) side note: could the CYA have dropped my pH by 0.4 overnight? I read that it doesn’t have that big of an impact.
any help would be greatly appreciated. Thanks in advance.
Dan
4/27 Tested FC 0.3 | CC 0 | CYA I put down at zero as water was crystal clear up to the top of test tube | pH off the charts basic | TA 125. Added 96oz of 12.5% chlorine | 79oz of 20* Muriatic. Ordered stabilizer.
4/28 Tested FC 0.4 | CC 1.6 | pH 7.2. Added 177oz of 12.5%. Ordered new DPD powder.
4/29-30 rain
5/1 Tested FC 0.1 | CC 2.4 | CYA 0 | pH 7.9 | TA 105 Added 4lb dry CYA (pillow case in front of return method) | 256oz of 12.5% (evening)
5/2 Tested (morning) FC 0.3 (!) | CC 3.0 | CYA 20ish | pH 7.4No additions.
Using Taylor k-2006 for testing and new SPD powder over last couple of days.
Pool water is very clear throughout and weather is chilly (though I optimistically fired up heater and am keeping water at 65 degrees). So my questions are:
1) could my 18k gal pool really be burning through this much chlorine? I added 2 gallons at 5:45 pm yesterday (overcast evening sunset at 8ish) and tested 0.3 ppm FC this morning (around 11:45am). Pool Math tells me I’d only need 1.5 gal to get to 10ppm I realize CYA is very low (still not sure why that would be since I didn’t drain/refill more than a few inches over winter. Could this explain such a big drop?
2) Do I need to add yet more Chlorine? I’ve added more than four gallons already. I’m not made of chlorine, you know. Bonus: just called supplier and they are SOLD OUT of chlorine.
3) most of the CYA was gone from pillowcase this morning but reading still only at 20. I’ve read that it takes longer to show up on test but does that mean I should wait to add more chlorine?
4) what’s up with CC going up and up? Do I need to just ad a ton of chlorine to break through? Pool store from which I purchased chems suggested adding 5gal all at once. This seems insane. Thoughts?
5) side note: could the CYA have dropped my pH by 0.4 overnight? I read that it doesn’t have that big of an impact.
any help would be greatly appreciated. Thanks in advance.
Dan
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