How long to wait before adding more stabilizer?
We drained and refilled our 22,000(ish) gallon pool last weekend. On Sunday (8 days ago) I added 6 pounds of powdered stabilizer. My test kit just came in the mail today and these are the results.
TA - 110
pH - 7.6
FC - 4.2
CC - 0
Calcium hardness - 250
CYA - ?? I'm not quite sure. The water got to the very top of the tube and I could just barely make out the black dot.
I know the powdered stabilizer takes longer to dissolve. How long do I wait before adding more? Also, I've got about 25 more chlorine tabs to use up and I've been keeping my one floater filled, so I want to figure that in to my overall stabilizer. I've got about 2 more pounds of the powder, but I don't want to add it yet if there's still a lot of undissolved stabilizer already.
Re: How long to wait before adding more stabilizer?
In 22K gallons, 6 pounds of stabilizer is enough to bring your CYA to about 35 ppm. Eight days, if you haven't backwashed the filter, is enough time for it all to be dissolved and show up in your water, so I'd say it's safe to add more at this point. Adding a total of 8 lbs will get your CYA to around 45 ppm, so it would be fine to go ahead and add that.
