Special Characteristics of Red Sea Salt: A single, chemically balanced formula to support the most delicate marine life Suitable for marine fish and invertebrates from every sea and ocean Reaches a stable, natural pH shortly after mixing No nitrates or phosphates Produced by a small batch process to ensure homogeneity of salt mixture Every batch is biologically and chemically tested for quality control Suitable for a small water change or a complete new aquarium set-up Can be mixed to any desired salinity 1.4 lb dissolved in 5 gal of Reverse Osmosis (R.O.) water at 750F (1Kg dissolved in 30 liters at 250C) will produce a seawater solution as follows: Specific gravity 1.021 pH 8.4 (after 2 hrs mixing or aerating) Alkalinity 2.2-2.5 milliequivalents/litter. One level cup of salt produces exactly 3.75 US gallons of seawater solution at a specific gravity of 1.021. Red Sea Salt pack sizes: US Pack Sizes Metric Pack Sizes Volume (gal) Weight (lb) • Pack type • Weight (kg) Volume (L) 10 2.8 • Bag • 1.25 38 25 7 • Bag • 2 60 50 14 • Bag • 4 120 80 22.3 • Bag • 10 300 150 42 • Box • 20 600 200 55.7 • Bucket • 25 750 300 84 • Box • 40 1,200