Excessive bleach consumption

[CarlD]

Ben always warns folks to be circumspect around pool stores. If you say "Liquid Chlorine" they don't blink, but go into a hissy fit and have a cow if you say bleach.

But that's nothing--if they tell you to use the "slug" method to lower total alkalinity and you tell them the truth that it doesn't work and it damages the liner, they go BALLISTIC!

[VOLDADDY]

11 PM reading 5.5 PPM. I added 4 jugs of bleach, which should get me to about 15.5 PPM overnight. I expected a drop today due to 90+ heat and a heavy swimmer load. I'll check again tomorrow AM and see what I lose overnight.

[VOLDADDY]

At 12:20 AM I am still up so I decided to test again. The last time I tested an hour after I poured bleach in a jug raised my FC 2.5 PPM. My FC was at 5.5, and I added 4 jugs, assuming I would be around 15.5. However, I was only at 13.5, so I am pouring a jug through my skimmer to get around 15.5-16 PPM. The other test I did was with generic bleach when I got a rise of 2.5 PPM, and now I am using Clorox. They are both 6%.

[VOLDADDY]

At 9 AM I had 14 PPM FC, so I lost 2-2.5 PPM from midnight to 9. I added a jug of bleach through the skimmer since it will be 92 today and we will have a heavy swimmer load. I am going to have to make another bleach run today.

[mbar]

You seem to be making progress! Best of luck.

[VOLDADDY]

Thanks Marie. I hope this ends soon!

With a CYA of 40, I need to get to 15 PPM to shock. Would it be safe to go to say 17 PPM? I have a vinyl liner and don't want it to bleach out, but I want to use the maximum bleach amount that is safe to try and kill this alien life form that has inhabited my pool. This is getting very tiresome!