water chemistry/New guy

[Drzat]

Bought a house a year ago here in southwest Florida and I'm a first-time pool owner. Like most people, I just take my water to the local pool store for my water analysis. After stumbling on this site about 3 months ago I realize I needed a better water test kit. While I was waiting for the test kit to arrive (TF Pro Salt), my SWG was showing the dreaded blinking green light (clean the salt cell). Looks like it's dead. After doing my own testing, here are my numbers:
Gunite pool, 13,500 gallons, Intellichlor IC40- Pentair easytouch control system with variable speed pump running 12hrs at 37 gpm. Air temp 87, pool temp 83. I normally brush and vacuum the pool weekly. Pool water looks good and clear.
Any guidance would be appreciated.
Salt: 3200
PH: 7.8
FC: 14
CC: 1
TC :15
CH: 225
TA: 70
CYA: 68
There's a lot of new construction going on around me, so my pool store said I have phosphates (500 PPB). I added some liquid chlorine until the new SWG arrives to keep the water from developing algae. I did notice after brushing the pool that it looks like there's some green algae on the bottom, no stains. Should I do the FAS DPD test in order to see how much chloring is being consumed? And then make a decision to slam? Will slamming the pool take care of the phosphates?
Thanks
Jack

 

[reggiehammond]

Are those results from your TF kit or the pool store?

If you see algae, you likely have it. Phosphates are a non-issue, stay out of the pool store for your own sanity.

If you're not tracking CSI, you run the risk of fouling your SWCG with calcium scale. Did you examine the plates? How old was it? Ever clean it? It might not be dead, just fouled.

If you see algae, you have it, but you can confirm it with a Overnight Chlorine Loss Test. But let's make sure you're using your test kit first.

 

[Drzat]

Are those results from your TF kit or the pool store?

If you see algae, you likely have it. Phosphates are a non-issue, stay out of the pool store for your own sanity.

If you're not tracking CSI, you run the risk of fouling your SWCG with calcium scale. Did you examine the plates? How old was it? Ever clean it? It might not be dead, just fouled.

If you see algae, you have it, but you can confirm it with a Overnight Chlorine Loss Test. But let's make sure you're using your test kit first.

Thanks for your response.
Yes to my own testing with the tf pro. When I plug in my numbers via the pool math app My CSI is -.26
The salt cell plates are clean. I had to replace the flow sensor two weeks ago. I’m guessing the salt cell is about 4 years old.