---
product_id: 342966223
title: "Instant Ocean Reef Crystal Sea Salt Marine Mix, 50-Gallon"
brand: "instant ocean"
price: "A$278"
currency: AUD
in_stock: false
reviews_count: 5
url: https://www.desertcart.com.au/products/342966223-instant-ocean-reef-crystal-sea-salt-marine-mix-50-gallon
store_origin: AU
region: Australia
---

# 50-gallon reef-grade salt mix Enhanced trace elements for vitality Extra calcium for robust coral growth Instant Ocean Reef Crystal Sea Salt Marine Mix, 50-Gallon

**Brand:** instant ocean
**Price:** A$278
**Availability:** ❌ Out of Stock

## Summary

> 🪸 Elevate your reef game with ocean-perfect precision!

## Quick Answers

- **What is this?** Instant Ocean Reef Crystal Sea Salt Marine Mix, 50-Gallon by instant ocean
- **How much does it cost?** A$278 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/342966223-instant-ocean-reef-crystal-sea-salt-marine-mix-50-gallon)

## Best For

- instant ocean enthusiasts

## Why This Product

- Trusted instant ocean brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Reef-Ready Formula:** Concentrations exceed natural seawater for optimal marine health
- • **Trusted Consistency:** Proven reliable for over a decade in professional reef tanks
- • **Coral Growth Booster:** Extra calcium supports large and small polyp stony corals plus coralline algae
- • **Bulk Supply Advantage:** 50 gallons of premium marine mix to keep your reef flourishing longer
- • **Vital Nutrient Enrichment:** Infused with trace elements and vitamins for thriving invertebrates

## Overview

Instant Ocean Reef Crystal Sea Salt Marine Mix delivers a 50-gallon supply of reef-optimized salt, enriched with extra calcium, trace elements, and vitamins. Formulated to exceed natural seawater concentrations, it ensures vigorous coral and invertebrate growth, making it a trusted choice for professional and hobbyist reef aquarists alike.

## Description

Formulated for reef aquariums and contains essential ocean reef elements in concentrations greater than those found in natural sea water. Extra calcium to help ensure the growth of large and small polyp stony corals as well as coralline algae. Extra trace elements to provide an additional measure of vital nutrients. Extra vitamins to ensure vigorous growth and survival of corals, anemones and other invertebrates in a captive environment.

Review: Always consistent. Have kept my tank for over 10 years with no issues. Good product.
Review: Excellent sel pour un belle eau salée de qualité pour votre aquarium !

## Features

- Instant ocean reef crystal salt 50gal
- Extra calcium to help ensure the growth of large and small polyp stony corals as well as coralline algae
- Formulated for reef aquariums and contains essential ocean reef elements in concentrations greater than those found in natural sea water

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000HCLNR0 |
| Brand | Instant Ocean |
| Global Trade Identification Number | 00051378018005 |
| Item Dimensions LxWxH | 41.9 x 33 x 6.4 Centimeters |
| Item Form | Liquid |
| Item Weight | 0.28 g |
| Item model number | RC3-50 |
| Liquid Volume | 1 Gallons |
| Manufacturer | Instant Ocean |
| Product Dimensions | 41.91 x 33.02 x 6.35 cm; 0.28 g |
| UPC | 746114500820 051378018005 |

## Product Details

- **Brand:** Instant Ocean
- **Item Form:** Liquid
- **Item Weight:** 0.01 Ounces
- **Liquid Volume:** 1 Gallons
- **Manufacturer:** Instant Ocean

## Images

![Instant Ocean Reef Crystal Sea Salt Marine Mix, 50-Gallon - Image 1](https://m.media-amazon.com/images/I/41CdOfu6j+L.jpg)
![Instant Ocean Reef Crystal Sea Salt Marine Mix, 50-Gallon - Image 2](https://m.media-amazon.com/images/I/41OuhSOQKPL.jpg)
![Instant Ocean Reef Crystal Sea Salt Marine Mix, 50-Gallon - Image 3](https://m.media-amazon.com/images/I/517W6++xZuL.jpg)
![Instant Ocean Reef Crystal Sea Salt Marine Mix, 50-Gallon - Image 4](https://m.media-amazon.com/images/I/51es6NlRWvL.jpg)
![Instant Ocean Reef Crystal Sea Salt Marine Mix, 50-Gallon - Image 5](https://m.media-amazon.com/images/I/51izy1GZmfL.jpg)

## Questions & Answers

**Q: Can this be used in a jellyfish tank?**
A: If your fish or whatever you have live in saltwater  then yes it can be used.

**Q: Why do the pictures say all 25 gallons when i selected 50?**
A: Im going to say that they just used the same stock photo for 10, 25, and 50 gallon packages rather than having to find 3 different pictures. If you ordered the 50 gallon, im sure you'll get the 50 gallon.

**Q: When is the expiration  date?**
A: I checked the box it came in and I don't see any expiration date on it. I see 142005 but that could just be the shipping people putting something on the box. I had a bad experience with this salt didn't think salt expired but maybe that is why I had trouble with it.

**Q: how is this different than instant ocean purple box?**
A: Hi Jimmy Choo, 

Reef Crystals starts with Instant Ocean as the base salt but we add additional trace elements, calcium, magnesium, strontium, etc. to it for the corals.  It also will chelate any heavy metals that are in your source water (assuming you are using tap water and not RO water, that is).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***. on 28 November 2025*

Always consistent. Have kept my tank for over 10 years with no issues. Good product.

### ⭐⭐⭐⭐⭐ Review
*by J***N on 16 August 2025*

Excellent sel pour un belle eau salée de qualité pour votre aquarium !

### ⭐⭐⭐⭐⭐ Review
*by M***Z on 6 February 2025*

Muy buen producto, es de los más comunes y accesibles

## Frequently Bought Together

- Instant Ocean Reef Crystals Reef Salt For 50 Gallons, Enriched Formulation For aquariums
- Brightwell Aquatics MicroBacter7 Complete Bioculture for Fish Tank or Aquarium - Populates Biological Filter Media for Saltwater and Freshwater Fish - Aquarium Water Treatments, 16.9 fl oz
- Seachem Reef Glue Cyanoacrylate Gel Coral Frag Mounting, 20g (001167)

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**Shop now:** [https://www.desertcart.com.au/products/342966223-instant-ocean-reef-crystal-sea-salt-marine-mix-50-gallon](https://www.desertcart.com.au/products/342966223-instant-ocean-reef-crystal-sea-salt-marine-mix-50-gallon)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-09*