I Can't Seem To Get The Cloudiness Out Of My Pool. Both The pH And Chlorine Are High. How Do I Lower Them?
by Shelley Rose
(Niagara Falls, ON, Canada)
I have shocked it twice now with powder chlorination.
Now the chlorine level is high. The pH level was high from the start...
Thanks for the question Shelley
First, I'd like to have your actual chemical readings for the chlorine and pH. The question says "high" but that doesn't help too much.
Granular chlorine will, initially, cloud up the pool because it has calcium in it. This kind of chlorine is called Calcium Hypochlorite. It's the calcium that binds the chlorine together. And granular chlorine has a pH level of 12, so you're raising the pH each time you use it.
I would suggest using liquid chlorine. You can even use bleach. It's the same thing; sodium hypochlorite. Bleach (6%) is just a watered down version of liquid chlorine (12 - 15%).
Obviously with bleach you'll use a little more because the strength is a little less. If you shocked with Dichlor, which is another powder chlorine, your CYA (stabilizer) will increase as well.
Be careful in using this as the CYA can get out of hand quickly. For every 10ppm of Dichlor, you'll raise your CYA 9ppm. You can go here to learn how to lower your pH levels:
Swimming Pool pH Levels
They have the charts you need for your size pool. There's three ways to lower your chlorine:
*Allow it to come down naturally through the sun and heat
*Drain 1/3 - 1/2 of the water, refill, and balance out the chemicals again
*Use a chemical called Thiosulfate. Only use this in extreme circumstances because over-use can mess up your chlorine readings.
Normally pool owners will allow the chlorine level to come down naturally. This could take anywhere between 2 - 5 days, depending on the current chlorine level and how much sun and heat they get. You can find your post on this page:
Cloudy Pool Water
And on the Q&A page in the "Cloudy, Milky, Discolored Pool Water" category.
Swimming Pool Questions and Answers
Hope this helps and let me know how it turns out for you.
Have a great Summer.