Complicating by overthinking
- Thread starter bethers0811
- Start date
High enough that it is not below the minimum by the next time you test and adjust 
The minimum is the most important thing to stay above.
The minimum is the most important thing to stay above.
Think of the 3 as the minimum. This leaves from 4-7 as your possible target level when you add chlorine to get you through that next 24 hours. This also leaves a little wiggle room, so that its okay if you seldom go below 4. You'll raise the FC up each day high enough to ensure that your pool never drops below three. The target range is so wide because there are many factors that determine how many ppm the sun will break down each day. If you open the pool in April, you'll likely not need to go very high above 3 until later when the days are longer, and it'll start dropping back in late summer with shorter days. If it's forecasted to rain all day the next day, you won't need much chlorine to last through the next day; but if its late June, not a cloud in the sky, and the pool is 88 degrees, you might need to go up near 7. Adding the daily chlorine dose is sort of an art. You'll get good at it after a while, and sometimes you'll adjust from an underestimate or overestimate that you made the day before which I still do often. You don't have to be super accurate each day, but try not to let it drop below the minimum very often. On the other hand, make sure you're testing often enough that you're not inadvertently building that FC up higher and higher each day. Then when you test, you see that you're at 10.
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