I've been trying to maintain my new pool for a couple months now, and after a battle with super high CYA (well in excess of 100), I did a 3/4 drain and its now down to 50-60ppm.
Since the drain, I've been only using clorox and Muriatic acid. From my past month of experience since the drain, I'm averaging a chlorine burn of at least 5ppm/day, and need to add 4-6 cups of acid every 3 days to keep the PH down.
It seems like my PH is constantly rising, and from what I can tell from reading the forms, I'm burning Chlorine fairly fast.
I have the K-2006 test kit, and in the book it states I need to consider this Cyanuric Acid correction to my TA. When reading up on TA, it states that if my TA is not in the ideal range, my PH can bounce quickly, which is what I am seeing.
Here are the readings straight from the tests;
FC - 10
CC - 0
PH - 7.8-8.0
TA - 90
CH - 320
CYA - 55
If I use the Correction table, my CYAf is 0.35. So using their formula [90-(55X0.35)], my TA would be 71 (90-19).
Given I'm new to all this, I wanted to confirm I'm understanding this correctly? Also, what would be my first course of action? Do I increase my TA with baking soda? If so, how long do I wait before re-testing and then work on PH?
Would this be the cause of why I am burning through FC so fast?