I'm not sure where to post this question, but...
Ok, so "pucks" add CYA to your water and the only way to reduce CYA is to drain some of your water because it doesn't evaporate. Am I right so far? My question is this, "Is there any CYA in municipal water supplies or does it only come from pool owners adding it?"
When I go on vacation in July I want an easy way to maintain my water while I am gone for about 10 days. How many "pucks" would I need to put into a floater for a 10K pool and air temperatures between 90-110 and pool water temp as high as 85?
Notice, I posted two questions. I really need an answer to both of them. Thank you