Two Little Fishies AccuraSea1 Synthetic Seawater Mix – 50 Gallon

Make consistent saltwater batches easier with Two Little Fishies AccuraSea1 Synthetic Seawater Mix, a precision-formulated marine salt mix designed for reef aquariums, saltwater fish systems, coral systems, and other marine aquariums.

Unlike traditional bulk salt mixes that require measuring from a large bag or bucket, the 50-gallon AccuraSea1 box contains 10 individually measured packets. Each packet is precisely weighed to produce a small, repeatable batch of synthetic seawater, helping take the guesswork out of measuring salt.

10 Individually Measured Salt Mix Packets

Each box contains 10 pre-measured packets.

One packet produces approximately:

4.5 gallons at 1.026 specific gravity

or

5 gallons at 1.024 specific gravity

That makes AccuraSea1 especially convenient for nano reefs, smaller aquariums, quarantine systems, routine water changes, or anyone who prefers making saltwater in manageable batches.

Simply measure the appropriate amount of freshwater, add a complete packet, and mix.

Natural Seawater Inspired Parameters

At a salinity of 35 ppt, AccuraSea1 is formulated to provide target parameters of approximately:

Calcium: 420 ppm
Alkalinity: 8 dKH
Magnesium: 1300 ppm
Strontium: 8 ppm
Potassium: 400 ppm

The formula is designed to produce parameters similar to natural seawater found around coral reefs.

Why Individually Packaged Salt?

Traditional bulk salt mixes can be exposed to humidity after opening, and components within dry mixes can potentially separate during handling and transportation.

AccuraSea1 solves this differently. Each batch is individually packaged and precisely weighed, allowing you to use an entire packet at once rather than repeatedly measuring from an opened bulk container.

The result is a convenient way to prepare consistent batches while keeping unused salt sealed until it's needed.

Great For

Reef aquariums
Saltwater fish aquariums
Mixed reefs
SPS and LPS systems
Nano reefs
Quarantine systems
Coral holding and grow-out systems
Routine water changes

Two Little Fishies states that AccuraSea1 is suitable for marine fish, corals, invertebrates, and marine plants.

Why Buy From Infinity and Beyond Aquatics?

Infinity and Beyond Aquatics offers trusted aquarium supplies for freshwater, saltwater, and reef systems, from everyday maintenance essentials to advanced filtration, testing, dosing, and aquarium equipment.

Need help selecting salt mix, testing equipment, or supplies for your marine aquarium? Contact us through our website and we'll help you find the right products for your system.

Shipping

This product ships using our Medium Shipping rate due to its weight.

Orders typically process within 1–3 business days. Tracking information will be provided once your order ships.

Orders containing multiple products may arrive in separate shipments depending on product availability and fulfillment location.