Quote Originally Posted by Cal_Newbie View Post
PH= 7.6
FC= 6
CC= 1
TA= 290
Calcium was way low, below 100
CYA:40
In order of importance:

1) OK, you have CC, that means you need to shock your pool, all the way up to 15, then see if the CC vanishes. This is the most important task.

2) Next, your T/A is WAY too high--you need it between 80 and 180ppm and absolutely NO higher than 200. So you'll need to lower your pH to between 7.0 and 7.0 and aerate your water (see the stickied thread on lowering T/A.

3) You have a vinyl pool. Calcium is virtually irrelevant unless it goes over 500. You should NOT worry about nor attempt to increase your calcium level, and I don't care WHAT some guy in a pool store says about you needing it. If you don't have a heater, you don't need calcium. Period. Yet he will swear on his saintly mother's head you need calcium. He's STILL wrong.