Size: 50 Gallon


ESV`s 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. ESV addresses 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 ESV`s liquid components are subject to ESV`s 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 their 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 ESV provides all of the slower dissolving ingredients in their 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.

Three Sizes Available:

  • 50 Gallon - Makes up to 50 gallons @ 34ppt
  • 100 Gallon - Makes up to 100 gallon @ 34ppt
  • 200 Gallon - Makes up to 200 gallon @ 34ppt


Recommended Mixing Values @ 34ppt:

  • Calcium - 450ppm
  • Alkalinity - 3.25meq/L (9.1dKH)
  • Magnesium - 1400ppm


ESV Salt Mixing Instructions

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