Been having issues with my pool. I am a new pool owner and have recently done a lot of reading/learning about pools. Here on this forum as well as using Google. Just finished testing my water with a drops kit recommended on/by this forum. However, it only reads total chlorine up to 5ppm. Here are my results.

TC= 5+
TB= 5+
PH= 7.2
TA= 160
TH= 170
CYA= 100+

Now what?