Originally Posted by davejnz
Fatman,your not too far away from me,I'm from Daytona Bch.I also use ocean water from time to time.It usually tests at 8dKH for alk and 400ish for calcium.Do yourself a favor,buy a Salifert calcium test and get yourself an alkalinity test(i use Tropic Marin brand).Alkalinity is one of the most important things you should be testing for IMO/IME.Once your calcium and alk become balanced,you dont need to test for calcium that much if you are useing a balanced calc/alk additive like kalk,2 part,etc.By monitoring your tanks alkalinity depletion,you just add a balanced calc/alk solution to correct that depletion.I test my alkalinity once every 2 weeks,I test for calcium 4 to 5 times a yr.