Seawater and Salt mix

AccuraSea® NSW

AccuraSea NSW is the original formula developed by nature and proven as a medium for supporting the growth and reproduction of marine fishes and invertebrates for eons. AccuraSea NSW is pure, natural seawater in its most nutrient-poor form as found on coral reefs. We collect AccuraSea NSW near actively growing coral reefs and immediately filter it to 5 microns, then UV sterilize it. This assures that it is free of pathogens and chemically stable for years. Immediately ready for use in all marine aquariums. No added nutrients. Contains all major, minor, and trace elements in the correct proportions as natural seawater because it is natural seawater, period. Packaged in a 4.4 gallon jug in a carton.


At Two Little Fishies the big picture has always been about Little details. That’s why we’ve made a new synthetic seawater mix like no other. We call it AccuraSea1. AccuraSea1 is formulated to simulate natural seawater, and it’s packaged as a plurality of precisely weighed packs. The advantages of this packing are many: You can mix up a batch without ever having to check the salinity. No more back and forth adding salt, mixing, waiting, testing and adjusting until you get it right. Simply put a measured volume of water in the mixing bucket or vat, add the contents of one or more packs depending on the water volume, and you have a precise natural seawater blend. If you’re thinking that’s no big deal, consider this: when a dry salt mix is not carefully blended, or when vibration during transportation causes the components to segregate in the package, one scoop taken from the package is not precisely the same as another, so unless you use the complete contents of a bag or bucket of salt, each mix you produce may not be the same. Even when the salts are milled to a uniform size and blended homogeneously by the manufacturer, the hygroscopic nature of synthetic salt mixes produces another problem: if you don’t use all the salt mix when you open the package, humidity gets in and reacts with the salts. The reactions can produce insoluble residuals and fundamentally change the formulation. Have you ever had to take a hammer to a salt bucket, or drop a bag of salt to loosen it up because it got hard? The individual packing of AccuraSea1 lets you produce seawater that is the same every time. The way we see it, precision is not a gross concept.

Fast dissolving. At a salinity of S = 35, AccuraSea1 produces the following target parameters: calcium 420 mg/l, magnesium 1300 mg/l, strontium 8 mg/l, potassium 400 mg/l, Alkalinity 8 dKH.

Formulated by Julian Sprung with pharmaceutical grade sodium chloride and high purity anhydrous salts. Manufactured at Two Little Fishies in Miami Florida.

Packaged in two consumer sizes:
50-gallon box containing ten 5-gallon packs, and
200-gallon box, containing four 50-gallon packs.