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
CYA 70
PH 7.5
TDS 3100
Temp 84

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?

I will get those test strips for the salt and check back with you guys. Thanks again.