Help understanding logs, pls

[stretchphoto]

These reading seem erratic.

I think the jump in pH was caused by previously using some possibly dated reagent.

FC slam levels just keep going up.

TA indicates need for baking soda.

Advice on how to continue?

Temps here in central IL have been cool. Lows in the mid 30’s. Highs 50’s.

Pool water is ever so slightly cloudy. Still working to get the winter silt out.

PoolMath Logs

 

[reggiehammond]

pH testing is not accurate above FC of 10.
Your CYA is super high, which is the source of your problems. If I were you, I'd dump 60% of your water and start with a fresh fill.
SLAM from there and you'll be in a much better spot.

Make sure to log a complete set of information when possible. Just doing some tests from time to time makes it a bit harder for us to help.

 

[stretchphoto]

Thank you for this.

But 60%???

I think I’ll wait on that, at least for now.

No algae. Clearish water. Seems drastic to me.

 

[reggiehammond]

It's your choice, for sure, but your CYA is unmanageably high. You will waste a lot of money on chlorine and not end up with clear water.
Your water replacement is likely much cheaper than the chemicals and time you will waste.

 

[stretchphoto]

Thanks. I do appreciate your advice.

Not sure why that cya jumped overnight. Either we were misreading it prior or I misread it this morning.

Going to keep monitoring for now.

Rain coming tomorrow. Planning to vac after that & will go from there.

 

[Mdragger88]

Thank you for this.

But 60%???

I think I’ll wait on that, at least for now.

No algae. Clearish water. Seems drastic to me.

Why are you adding cya? This increases your necessary slam level


Clearish = algae
Slam fc level for a cya of 100 is 39ppm
It is impractical to slam a pool with a cya over 80ppm.
Do an
Overnight Chlorine Loss Test to confirm or deny algae although cloudy water & dead algae on the floor count as visible algae.

 

[Mdragger88]

Also- the water is quite cold i presume.
Get your cya sample room temp before testing.

 

[stretchphoto]

Thank you re room temp! Had not heard this before but was wondering re the cold here.

 

[stretchphoto]

OCLT results.

Boom.

 

[Mdragger88]

Passing oclt is great
do you see any visible algae (dead or alive)?
Is the water still cloudy?
If either of those are true you should keep fc at slam level for your cya until they are no longer true.