Our B-Ionic Seawater System is a unique four-part system for mixing the purest, most consistent synthetic seawater available to the marine aquarist. It is recognized that most reagent grade salts can contain contaminants (trace metals, etc.) at levels which may inhibit the growth of some algae species from low nutrient environments (oligotrophic) such as coral reefs. We address this issue by providing ultra-low heavy metal Sodium Chloride (maximum allowable lead concentration; lower than half the maximum allowable for reagent grade sodium chloride) and USP grade Magnesium Sulfate as the dry components of the system. All other chemicals pre-dissolved in our liquid components are subject to our three phase purification process, resulting in significant lowering of contaminants, including phosphate. The many dry blends that are available on the market today may not be homogeneous, which can result in considerable chemical variations, not only from batch to batch, but also from within the same container. Furthermore, humidity contamination during storage can result in localized precipitation reactions. The B-Ionic Seawater System avoids these issues by providing the dry components of our formulation in separate containers. All other major, minor, and trace elements are pre-dissolved in a highly concentrated two component liquid system. These components can then be easily measured for any size batch of synthetic seawater. Because we provide all of the slower dissolving ingredients in our liquid components, Batches mix quickly, and can be used within 10 minutes of preparation with no adverse effects, providing the initial RO and/or DI water contains sufficient dissolved oxygen.