New to forum. Saw a recent post similar to my situation but without the CYA issue.
"Just bought a home, had an above ground pool with it."
Water was clear, just some leaves and pine needles in the center. Quickly cleaned up with leaf vacuum.
Pressure was about 14 so i went ahead and backwashed and rinsed the filter. Dropped to about 10.
Left me a bucket of Super HTH 3" tabs, A&H Free & Clear Tabs, some ph decreaser, HTH Shock n Swim 1lb bags, and an HTH 6 in 1 test kit.
Haven't really had time to baby it with all the moving and unpacking, until now.
Was maintaining with shock, vacuum, sweep, and tabs. pH stayed around 7.0 -7.2, Chlorine .5 to 2 mostly.
1 tab of HTH in a floater, 1 A&H in the skimmer as needed. Shocked it 4 times in 3 weeks.
Last week I noticed some green spots on the bottom, so i shocked it, swept and vacuumed. Had a small piece of HTH left in floater so I added another.
2 days later it's green again. I swept, vacuumed and shocked it again. Next morning took a sample to the pool store.
We've had over a week of no rain and 90+ temps. Pool only gets about 5 hours of sun daily. 82 to 84 water temp.
Get lots of pine needles and oak leaves falling in it, it's a constant battle.
That's a little background of how I got to where I am today.
So my first analysis:
FC - .23
TC - .46
CC - .23
pH - 6.7
TA - 39
CH - 148
CYA - 144
SI - -1.7
So added 24 lbs of Alkalinity Increaser in 3 6hr intervals of 8lbs
Then 10lbs of Hardness increaser in 2 6hr intervals.
(In the meantime I had found this forum and was researching the BBB method.)
Tested myself with HTH kit 4 hours after 1st dose of Hardness Increaser yesterday.
TC - 0.5 -1 (probably 0.5)
pH - 7.4
TA - 180
CH - 240
Back to pool store this morning:
FC - 0
TC - 0
CC - 0
pH - 7.3
TA 110 Adjusted 60 (??)
CH - 173
CYA - 150
SI - -0.4
Recommending I drain 1/3 of the pool and refill. Spin a day or 2 and bring sample back.
Got about an inch of rain today so that may have helped dilute just a little.
I'm thinking the best thing to do here is drain about 1/2, refill, retest, and start BBB method.
I have seen the Chlorine/CYA chart. Have the Pool Calculator app on my phone, website bookmarked.
Test kit will be ordered tonight. Got a couple gallons of DG 8.25% Bleach (I'll need more), a Box of 20Mt Borax, and will grab some Baking soda tonight.
So, my question is: Am I on the right track here?
Any advice will be appreciated.
BTW: Nice place here! Lots of good info. Glad to be aboard.