High salt levels after treating for algae

[Mcaveman]

In the past month I have slammed the pool twice for what I suspect is algae, both times for 3 days , 1st time just bleach , 2nd time bleach and algaeside .
Water was clear but my FC was coming in low again. Now the salt generator is saying high salt and my Tayler salt kit also says it’s high salt but I haven’t added any , would the algae side chemical cause this?

current levels
FC 9
Cc 0
Alk 90
Cal 300
Cya 65

 

[ajw22]

How much liquid chlorine did you add during your SLAMs?

Every gallon of LC you used added 3.7 ppm of salt to your pool.

BTW, your CYA is 70. We round up.

 

[Mcaveman]

It’s a large pool so each slam was probably around 40 gallons give or take . Also 6lbs of sodium bromide(way more than needed wife miscalculated)

 

[JamesW]

Is the heater on?

What is the water temperature?

What is the actual salinity?

What are the diagnostic readings?

 

[ajw22]

The LC added as much salt as 3 to 4 40lb bags of salt.

 

[JamesW]

Also 6lbs of sodium bromide

Why are you adding sodium bromide?

 

[Donldson]

Also 6lbs of sodium bromide(way more than needed wife miscalculated)

Well... That's a HUGE problem.

 

[JamesW]

80 gallons of 12.5% liquid chlorine will raise the salt by 366 ppm, which is equivalent to 138 lbs of salt.

 

[JamesW]

If the 400,000 btu/hr is on, the temperature in the cell will go up by about 17 degrees and the cell current will go up by a lot.

If the cell current hits 8.0 amps, the high salt light will come on and shut off the cell.

 

[Mcaveman]

Added the bromide per my pool builder tech but we got the calculations wrong , not using the heater water is 87 , it’s been hot here and will be all week, pool is full sun all day .

 

[Donldson]

Added the bromide per my pool builder tech but we got the calculations wrong

Did your pool builder tech intend to turn your pool in to a bromine pool? Because you have a significant enough bromide bank now that your pool is no longer a chlorine pool. Which does explain the decreasing chlorine bromine levels, since bromine is not protected from sunlight by CYA it's burning off quickly.

 

[Mcaveman]

No it’s still a chlorine pool

 

[JamesW]

No it’s still a chlorine pool

Not anymore.

It is now a bromine pool.

What are the diagnostic readings?

What is the actual salinity?

 

[Mcaveman]

FC 9
Cc 0
Alk 90
Cal 300
Salt level reading 4800
Ph 7.1

 

[Donldson]

No it’s still a chlorine pool

No. You added a bromide bank to the water. That is specifically how you turn a pool from a chlorine pool in to a bromine pool.

It is most certainly a bromine pool now.

 

[Mcaveman]

The FC is holding its 9-10 level with full sun 90 degrees today and the intellichlor is blinking high salt . Is that still making chlorine?

 

[JamesW]

80 gallons of 12.5% LC would add 366 ppm of salt.

What was the salinity reading before adding the liquid chlorine?

I would not add any more sodium bromide because it is going to cause you nothing but problems.

 

[JamesW]

The intellichlor is still working.

 

[Mcaveman]

I see nothing on the label about not using in a salt pool .

 

[mknauss]

Is that still making chlorine?

What SWCG do you have? Please add it to your signature.