Scale on tile (SWG in Phoenix)

[greser]

I recently took on the responsibility of taking care of my pool. I have a 16000 SWG pool in Phoenix. There's a moderate amount of scale where the fountains come into the pool. My first set of calculations showed:
Fr Cl- 9.5
pH 8.0
TA 70
CH 575
CYA 33
NaCl 3800
SI 1.6
A program that I used suggested raising CYA to decrease scale. Would this help and to what level should I shoot for?

Thx, Greg

 

[Texas Splash]

CYA (stabilizer) won't remove scale. It will however help your SWG work more efficiently. We recommend a minimum CYA of 70 for salt pools.

As for the scale, it boils down to 4 main (elevated) components - water temp, TA, CH, and pH. We know CH will be high in your area, water temp will go up in the summer, and your TA is fine. It's actually the elevated pH that's most critical to manage. It impacts the "CSI" the most drastically - see our PoolMath APP when you load your test results. By lowering your pH a bit and keeping the CSI slightly negative, you reduce the likelihood of scale.

 

[proavia]

How are you testing your pool water?
How did you get a CYA reading of 33?

 

[greser]

I tested CYA using the Taylor kit. 33 was my closest estimate. Let’s just say 33 –-ish
Is the best way to add CYA to buy conditioner from the local pool store?

 

[proavia]

Round up - it's not possible to read single digits on the CYA tube as it's logrithmic not linear.
Your estimated CYA of '33' should be read as CYA 40.

Fill out your signature with your pool, pool equipment (including manufacturer and model numbers) and test kit info. Be specific. This helps us to help you without needing to ask about your pool each time.

 

[greser]

Thx proavia. I added what I have off the top of my head and will complete when I get home.
I did not know it's logrithmic (which is why I'm learning exponentially myself on this forum).
what's the best way to increase CYA?

 

[JoyfulNoise]

Up in the Phoenix area I suggest you contact Mark White of Arizona Bead Blasting. He does pool tile scale removal and is a good guy, very professional. He used to do work down in Tucson but it wasn’t profitable for him to drive down here with all his equipment for one or two jobs and there are enough “hacks” in Tucson that do tile cleaning (poorly) on the side for cheaper so Mark really couldn’t compete with them. So he mainly operates in the Phoenix area.