Raising tank Alkalinity. Effect on Calcium?

[eraml]

I have had my tank (~100 gal) up for ~6 months, and have recently added a few more SPS & LPS corals to the mix.

Have been keeping my Alk around 7-7.5 (using Red Sea Blue Bucket salt), but noticed it dip to 6.8 when I tested yesterday.
So I added in some Seachem Reef Fusion 2 to raise the Alk

Tested today to see the Alk raised back to 7.1, but also surprised at what my Calcium increase to 525:

Using the Hanna Instrument test kits for both measurements.

Is dosing the Reef Fusion to raise my Alk going to also have an impact on my Calcium?
Can I continue to dose over the coming days/weeks to bring it up closer to 8?
Not quite sure what/why my Calcium numbers are going up...

 

[HuduVudu]

It didn't seem to go up by much. 505 one day then 525 the next. In the big scheme of things that's not much.

Watch for a trend would be my suggestion.

 

[eraml]

ok thanks, looking to stabilize CA around 450-475 for the long term

 

[HuduVudu]

Sounds like a plan. Don't get crazy on the numbers we are dealing with biology not moon landings.