Good morning all. Woke up and the pool was still there in one piece - yeah!

I did my water test using the Walmart 5 way drop test kit. Because my numbers yesterday were from the pool store, I hope that doesn't cause too much of a discrepancy. Can I be cautiously optimistic?

Thursday
Total Chlorine .6
Free Chlorine .6
Ph 6.2
Alk 20
CYA/Stab O
Hardness 160

Friday a.m.Chlorine
Chlorine 5.0
Ph 7.6
Alk 60
CYA/Stabilizer 60
Hardness 0

The hardness has me confused. The test calls for dropping one drop in the water and it should turn blue if there is hardness present. Then drop by drop you put in the next solution till you clear it the water, # of drops times 10 gives you a reading. AT THE FIRST DROP MY WATER DOES NOT TURN BLUE, IT STAYS CLEAR. Does that mean there is no hardness? How come pool store got a reading?

Advice please?