Water lvl's question

[Mstanker]

So I tested my lvl of my water and here they are:
ammonia;0
nitrite: 0
nitrate;0
temp:80
ph:8.2ish light purple
cal. is .85%=435ish
alk: .50=7.0 dkh
mag. .96% of vile=1600+

The lvl's look good to me beside the mag. what would cause this to happen or to so high?

 

[Zero Nitrates]

It's no biggie if mag is high.