when do i start dosing for calcium?and what do i dose? kalkwasser, calcium supplements like tech C B? what are the pros and cons of each type of supplement? is there a benefit to buying salt that has enhanced calcium levels? do i not need to dose for calcium if the levels are high enough? i am asking because i still dont know wether to get tropic marin or tropic marin pro reef. lol. still in the process of setting up my tank and i want to get everything rite. lol