First SLAM Complete - questions on other adjustments (PH, TA, CH)

[OHpoolguy]

Hello,

Completed first slam, water in FC drift down from the slam. Current numbers below:
- FC: 7.5
- CC: 0.5
- PH: 7.8
- TA: 170
- CH: 25
- CYA: 35

Questions:
- Is PH accurate enough at current FC to start adjusting PH down so I can attempt lowering TA by aeration? And/or, with an AG vinyl pool, is TA even that critical?
- CH way below recommended levels. Suggestions? Pool math showing a default target of 300, requiring 22 lbs Calcium Chloride. Understand this may be for IG pools but curious if I should make any adjustments here since it's way off.

If it's relevant, pool water is from rural well, through iron filter and water softener. Also, have switched from chlorine tabs to liquid chlorine in the last 4-5 weeks.

Thanks
Greg

18’ AG, 8600 gal, vinyl, intek 1/2 hp, 18” sand - 1.07 ft2, tf-pro kit

- edit: added CC 0.5

 

[mknauss]

Welcome to the forum
The pH test is valid with a FC under 10 ppm.
No real need to force TA down. Just manage pH in the 7's
Your pool does not need CH unless you are having foaming issues. The CH Poolmath range for Vinyl liner pools is 50+, so I suspect you do not have your Pool specs entered into Poolmath.

Use 40 ppm for your CYA ---

Good job, and welcome again.

 

[OHpoolguy]

Thanks. Thought I set up the Poolmath with info, but will check it again. Also plan to up CYA a bit, working on that in smaller steps as I'm a recovering puck addict...