You need a reliable test kit to cut the pool store cord.
They don't know their rump from their elbow when it comes to water chemistry. They do however, excel at selling you stuff you don't need, then tell you to drain when it goes south. Oh. And they have rebalancing chems for you too. Oops. Too much. You need to drain.
See
Test Kits Compared.
The TFpro from tftestkits includes a $48 stirring device that not only makes testing much easier, but also more consistent. It's a better value than the K2006c plus a smart stir.
Anywho, get yourself a kit and post up the #s. We'll walk you through the rest with nothing to sell you but good will. We'll teach you to do it on the cheap and easy.
Pool Care Basics
How Clear is TFP Clear?