Water Parameters Question

[Baldy]

Hello all,

I just recieved the package with the rest of my test kits, and ran all the tests on my tank. It has been running for about 4 weeks now with nothing but substrate in it awaiting LR. All powerheads, skimmer, and canister filter ar working great. My question is regarding calcium and alkalinity levels. I mixed up RODI water with H2Ocean salt to a salinity of 1.0255 according to my hydrometer (yeah i know, a refractometer is next on the list), and my parameters as of today are:

Ammonia = 0ppm
Nitrites = 0.1ppm
Nitrates = 0ppm
Phosphates = 0ppm
pH = 8.2
temp = 78 deg
salinity = 1.0255
alkalinity = 8 dKH
calcium = 480ppm

Im wondering how my calcium can be so high without a high alkalinity as well. according to mykas guide, i would need an alkalinity over 14 to balance properly. i bought a bottle of each seachem reef fusion (1 and 2), should i dose to bring the alkalinity up to where it should be?

Im picking up live rock today, and plan on starting with a couple clowns and maybe a couple zoa frags in the coming weeks/months, but i will be taking it slow with the additions.

Any advice?