Enter any product and an amount to see every change it makes before you pour it. For example, 1 gallon of 10% liquid chlorine in 15,000 gallons adds 6.7 ppm of free chlorine.
0.5 gal of Liquid chlorine 10% in 15,000 gal changes:
| Change | Afterwards | |
|---|---|---|
| Free chlorine | +3.3 ppm | |
| Salt | +5.5 ppm |
Check the product label. Strengths vary by brand, so enter the % printed on yours. Add one chemical at a time, into the water, and never mix chemicals.
Save this test and get reminded when it is time to retest.
Pool Calc for iPhoneComing soon to the App StoreChlorine products are not interchangeable. Dichlor and trichlor add stabilizer, cal-hypo adds calcium, acids lower alkalinity, soda ash raises it, borax adds borates, MPS slowly lowers alkalinity. Over a season those side effects decide where your water ends up.
Briefly, as it is added. As the chlorine is used up the effect reverses, so over time liquid chlorine is close to pH neutral.