More important: Keeping chemistry in range or CSI in range?

kstough

Member
Jun 7, 2019
13
Ozark, AL
Is it more important to keep water chemistry values in the target ranges, or is it better to keep CSI balanced?

I attached my current water results for your review. And although everything but TA and CYA are in range, my CSI shows it’s at a corrosive level. And when I play with the calculator and move my TA and CYA to be in range, it actually make the corrosiveness level worse. It shows that I would have to bring my CH up to 250 to even get my CSI in an ok range while also keeping my water chem levels in range as well.

Not sure if I need to stick to the water chem ranges or let some of those ranges slip higher or lower to get CSI in range...Or go with adding tons of calcium so they both stay within range.

Thanks for the help!
 

Attachments

Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Plcae your focus on the recommended levels. With a vinyl pool, the (low) CSI doesn't really apply to your pool since there is no plaster to be concerned with. Now if your CSI was exceptionally high, then yes, you would be worried about scale. But a low CSI - no worries. :)
 

kstough

Member
Jun 7, 2019
13
Ozark, AL
Ok will do. One more question. Why is the TA recommended to be lower in SWG vs chlorine pools? Because of the metal ladder, step rails, and my Dolphin robot, I'm gonna still keep an eye on my CSI a bit (although not being super anal b/c I have vinyl). It looks like if I lower my TA to 80 as recommended, the CSI calculator shows it would drop to corrosion levels. Just wondering if it would be bad to leave my TA at 100 even though I have a SWG and the recommended TA levels are 60-80 vs 50-90+ is chlorine pools.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
22,017
Laughlin, NV
Are your robot, metal ladder, and steps made from a calcium based material? That is what a negative CSI is corrosive to, not metals, etc.

Keep your pH in the 7's. The TA will settle were it does, and do not worry about CH, unless for some reason it rises above 350 ppm.
 
  • Like
Reactions: Leebo

duraleigh

Admin
Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
In The Industry
Apr 1, 2007
32,597
Sebring, Florida
Up on the soap box again.......A pool in Alabama will have virtually no use for CSI. For that matter, I believe the majority of pools in the US have no use for it, either.

High CH fill water (and some other issues) is when CSI gets important and, unfortunately, the desert Southwest, some parts of Texas and California are where this troublesome condition is found.

We Lucky ones in the North, Northeast and most of the Southeast do not have these conditions

I also might mention that with the glaring exception of Texas A&M, we have the better football teams, too! Gig 'em !
 
  • Like
Reactions: Jeff J.

AggieTexan09

Member
Jun 1, 2019
21
Houston
I also might mention that with the glaring exception of Texas A&M, we have the better football teams, too! Gig 'em !
Just had to take a shot eh? I'll admit our team has been in a sad state of affairs for a long time. Real shame considering how big football is and how many texas recruits we lose to good teams out of state.
 

duraleigh

Admin
Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
In The Industry
Apr 1, 2007
32,597
Sebring, Florida
I knew I didn't construct that post correctly. I am a big Aggie fan! Wording was poor. Jimbo is gonna' save us, even if we do have to pay him enough to resolve the national debt.
 
  • Like
Reactions: AggieTexan09