First Chemistry Test - May have to drain...

Good afternoon! For background, I recently purchased a house with an existing in-ground pool. In my last post a couple weeks ago, you guys helped me understand and operate all the pool equipment. My TF-100 test kit just came in and I ran through the battery of tests. Here are the results:

No visual problems with the water, it looks great.
pH > 8.2
FC = 1.5 ppm
CC = 0 ppm
CH = 650 ppm
TA = 180
CYA = 80-90 ppm, probably closer to 90
Temp is cold, probably 45-50.

It looks like the real...

First Chemistry Test - May have to drain...