Is it a new pool?
"Hard" pools (soft being vinyl or fiberglass) frequently push pH up when they are new. Owners add lots of acid during the first season.
But you Tot Alk (T/A) is WAY too high and you need to lower it to 80-125ppm--the normal range for a hard pool (vinyl can go up to 180 without a care). Go to the top of this forum on Alk and Calcium and read the stickied posts on lowering T/A. Baking soda and soda ash will raise your T/A, so don't let either near your water.
Calcium should be between 200 and 400ppm for your pool (for vinyl the allowable range is 0 to 500--that's why vinyl doesn't need calcium). You can use cal-hypo to chlorinate or just add calcium.
Bookmarks