Fiji gold. dose it for 3 months consistantly and you will have coraline even on the glass, if you don't clean it. all the other items workif your consistant but there is no way you can overdose with fiji gold. this is the tank i dose.

Salinity - 32ppt with dissolving salt granules present in sump.
pH - 8.3
Alkalinity - 9
Nitrate - 10
Nitrite - undetectable
Ammonia - undetectable
Phosphates - undetectable
Calcium - 28 <--- 520 PPM (the expert says its ok)