Quote Originally Posted by Jeffski View Post
Thank you for that great response. You guys are so helpful.

Here are the stats from my water test:

FC 0.7 - I think this has been steadily dropping because the SWG isn't running.
TC 1.5
TA 181
I would lower this to around 80-90 ppm (or even lower). Several people have reported much less acid usage and much better pH stability with a lower TA when using a SWG. Once you do this you should have good pH stability if you keep your pH at aroun 7.6.
CYA 70
PH 7.5
TDS 3100
TDS is going to be the sum of your salt level and anything else dissolved in the water. I would suspect that yoursalt level is too low and you need to add salt. I suspect that your actual salt level is below the low salt cut off point of your unit. This is probably from winterizing your pool. What kind of filter do you have. If it is a sand or DE filter you also lose salt and stabilizer each time you backwash so the levels do need to be checked on a regular basis to maintain them.
Temp 84
I noticed you did not include a calcium test. Even if you have a vinyl pool where calcium is not an issue it is a parameter that needs to be watched with a SWG because calcium can also come from your fill water and if it is high you can get scaling on the cell, especially if you don't keep close watch on your pH.
Here in Michigan we lower the water level in the pool a couple feet in the winter. The snow fall and rain fills it back up by the time we open in the spring, but it makes sense that every spring I should have to add salt due to draining a couple feet off in the fall, right?
Exactly!
I will get those test strips for the salt and check back with you guys. Thanks again.
I suspect that when you test your salt you will find it is low!