How are my numbers?

[jimbethesda]

I’ve had water in my new pool about 45 days now. SWG is humming along. I think everything looks good. My only issue is negative CSI. Here are my numbers:

FC: 7
CC: 0
PH: 7.8
TA: 70
CH: 300
CYA: 70
Salt: 3400
Temp: 73
CSI: -.24

I know that a CSI of -.24 is ok, but in order to stay above -.30, the lowest my PH can go is 7.8. That doesn’t leave much wiggle room before it’s over 8.

So, which method is better:

1) Wait until my PH is 8.2, then bump to 7.6. At 7.6, my CSI is -.43, but it will gradually rise up.
2) Bring TA and/or CH up to give me a larger acceptable PH range.
3) Something else?

My fill water is:
PH: 9.5 (according to the City, my test stops at 8.2)
TA: 60
CH: 80

Thanks for your help!

 

[mknauss]

Your pool water temperature will rise very soon and that will raise your CSI, do not stress over it.

Put 85 degrees in PoolMath and see what the CSI says. I suspect your water will be that temperature in about a month. Mine all ready is that temperature.

 

[ajw22]

Relax. TFP CSI guidelines are down to -0.6. Some folks talk about -0.3 being better. Your CSI will vary as the pool environment changes. Don’t go chasing after it. Your numbers are fine.

 

[jimbethesda]

Yes, temp increase will help.

Thanks!