SWG Switch Stahled

[arin]

This past friday our pool builder installed SWG on our one year old pool. My work travel doesn't allow me to dose regularly so I am switching over. On friday I added enough liquid conditioner to move up to estimated 70 CYA. Unfortunately the pool builder had an issue with the SWG unit reading to high salt (code) and the cell not producing. They are going to return sometime next week but in the meantime I want to run proper FC. The pool builder dumped salt into the pool I used test strips to check 1340ppm testing twice to verify. Builder put 320 pounds into 12,500 gallon pool. I assume my safest course of action is to run FC at 8??

 

[chem geek]

Treat this as a non-SWG pool until the SWG is working so according to the Chlorine / CYA Chart for 70 ppm CYA this means a minimum FC of 5 ppm but as you note you should target higher to make sure you don't go below that minimum. Usually pools lose 2-3 ppm FC per day so 8 ppm FC sounds reasonable if you check the chlorine every day.

 

[arin]

Thank You!

 

[bdex]

And invest in a Taylor K-1776 saltwater test kit if you are going SWG. The strips were never the most accurate thing in my experience and it is a pretty easy test to throw into the rotation.


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