Redman said:
mynewpool said:
I add daily and use my test results to determine how much to add.
How did you figure out how much liquid bleach/chlorine to add to keep it at normal range?
My test either show it as ideal (7.2-7.8) or almost none at all. I'm trying to figure out how much bleach to add at a time to reach the ideal range.
I probably add a little to much when needed. I guess this is an ongoing learning process right now.
How did you determine 7.2 - 7.8 was your ideal chlorine level? Just asking because that sounds more like the ideal pH range. How much CYA do you have in the pool? That determines what level you need to keep chlorine at and a minimum level not to let it fall below.
Find your CYA on this chart and it will tell you your minimum and target:
http://www.troublefreepool.com/pool-school/chlorine_cya_chart_shock
I tested nightly for a while and added enough bleach to get me back up to my target + 1 ppm. So if my CYA was 40, I brought it up to 6. (target of 5 + 1). I added the 1ppm so that in case I accidentally missed a night adding bleach, I would not drop down below the minimum value. (My pool uses about 1.5 ppm per day, so over two days, that would drop me from 6 to 3 which is the min.) On days that I know I will not be able to add the next night, I have doubled my addition. Normaly nightly addition is 2 cups for my small pool. If I won't be around the next night, I add 4 cups to bring me up to 7.5 ppm.
If adding and testing nightly, add enough to reach target or 1-2 ppm over that.
If adding and testing every other day, figure out how much your pool is using per day and add that to your target value. Then add enough bleach to reach that at least that value.
Same process if you were checking every 3rd day, but that is really not practical with much sun or hot weather. Maybe in the spring or fall. If you cannot do daily or every other day, you might look into a liquidator or SWG.
By the way, the pool calculator tells you exactly how many ounces to add. It does not need to be a guessing game.