Re: Using Reef Builder?
Alkalinity is different than Carbonate hardness depending on the situation. Alkalinity is a measure of all buffering capacity of the water and carbonate hardness is a primary buffer in most systems. However, alkalinity is a culmination of all buffering capability of the water (which can include carbonates, phosphates, borate, etc.). In an aquarium, you are dealing with a closed system vs. an open ocean and waste production has much more of a direct impact on the pH. We always recommend running a higher alkalinity in an aquarium because of this.