Pool Calculator Corrosive ?

[nupoolsoon]

Here are my numbers for this am.

FC.....4.0
CC....0.0
TC....4.0
pH....7.5
TA....85-90
CH.....180 (approx)
CYA....60
Salt.....4200 (a bit higher than we typically like, but oh well)

When I input these number into TPC, it comes up with corrosive -.49. Everything in the pool has been really stable. TA dropped a bit with the rain, but still within a good range.

The only thing I can adjust would really be the pH to get my corrosive number down a little bit. I can add CH, but it seems adjusting the pH has a bigger impact on the corrosive # than the CH anyway.

So is a corrosive number of -.49 something to be concerned about where I should adjust my pH to 7.7 and hope that it remains steady there?

Thx.

 

[frustratedpoolmom]

You don't need to worry about that since your pool is vinyl.

You're numbers look good

 

[nupoolsoon]

Cool, Thanks!

Now I see that only "negative" affects plaster, stone, pebble, etc. And anything great than a "positive" .6 is not good for anyone. I wasn't concerned about the pool per se, but more the equipment.

Thanks again!

 

[PaulR]

I wasn't concerned about the pool per se, but more the equipment.

The pH is really the only thing to watch as far as the gear is concerned. In the normal range you'll be fine.
--paulr