Fritz Elements Alkalinity

Fritz RPM Calcium Buffer System Part 1 delivers highly concentrated carbonate alkalinity to maintain the critical mineral balance your reef requires. This pure formula contains only essential ingredients—sodium bicarbonate and sodium carbonate in deionized water—without unnecessary trace elements that can accumulate to toxic levels. Designed to work in tandem with Part 2 Calcium, it restores alkalinity to the optimal 8–11 dKH range essential for vibrant corals, fish, and invertebrates. Each millilitre raises alkalinity by 2.1 dKH per gallon, making it ideal for both initial adjustments and routine daily dosing. Compatible with all Fritz products and automated dosing systems, this premium-grade supplement mirrors the quality found in Fritz RPM Marine Salt Mix. Shake well before use and allow cloudiness to clear between Part 1 and Part 2 additions for best results.