carbonate hardness (kh)

[mitchwelt]

i tested my water today and i have a kh of 17 is this bad my ph is 8.2 and my calcium is at 480 not ammonia no nitrate...how can i lower my kh?..

[davejnz]

Carbonate hardness is usually not a test done for saltwater.Alkalinity is measured in dKH and that test is critical to do IMO.

[Reptoreef]

retest with a quality alk test kit.