Calcium Question

[tim the toolman]

So I hadn't checked my cal in a while and had continued on with my regular maintenance schedule. This morning I noticed my toadstool looked a little ****ed off so I ran full tests on parameters. I ended up with

Nitrates 0
Nitrites 0
Ammonia 0
Phos 0
Cal 530 ppm
Alk 11 dkh
salinity 1.025

Should these high levels of cal/alk be a concern or should I just not dose for a couple days? I was planning on doing a 35g water change tonight anyways.

Nitrate nitrite ammonia and Phos were tested with API kit. Cal and Alk both with Hanna and Refractometer for salinity.