The company that brought us the original 2-part solution is back on the cutting edge table with another product that creatively addresses some common complaints about modern seawater mixes. B-Ionic Seawater System is a multi part solution to mix your own Seawater using Magnesium Sulfate, Sodium Chloride and an ultra concentrated version of B-Ionic with liquid anions and cations in separate containers. For those of us that are using using a water supply with Calcium and Carbonate values that are out of balance with reef aquarium values, using a salt with balanced Ca and KH won’t be too helpful. With the B-Ionic Seawater System, the home aquarist can custom tailor their seawater based on the raw values of their water supply. A 4-part DIY salt mix is definitely not for everyone, and certainly not the beginner marine or reef aquarist. This approach to seawater mixing is similar to the balling method of mineral replenishment for reef tanks; we expect that the ballers will be the first to adopt the B-ionic seawater system for their home aquarium. ESV also touts the fact that their salts are all blended with above-reagent purity grade constituents and that some of the slower dissolving salts are already pre-dissolved in the liquid parts of the Seawater System, leading to quicker mixing times etc. For more information download the pdf spec. sheet and the product is scheduled to launch in November.