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Instant Ocean Sea Salt for Marine Aquariums, Fast Dissolving, Treats 50 Gallons
Key item features
- FORMULATED SPECIFICALLY FOR MARINE AQUARIUMS: Contains every major, minor and trace element delicate marine fish and invertebrates need.
- DISSOLVES FAST: Superior solubility – provides a clear, ready-to-use solution in minutes.
- IDEAL pH: Quickly achieves and maintains ideal pH – free of nitrate and phosphate.
- CONVENIENT: No special additives are needed – will not separate during packaging and shipping.
- INSTANT OCEAN® SEA SALT: The industry standard for quality, consistency and value for more than 40 years.
Specs
- Aquarium water treatment typeAquarium Water Treatment
- Water contaminants removedOther Debris
- Size15 lbs
- Animal typeFish, Coral, Anemones
- Rec. useCommercial, At-Home
- Product lineSea Salt
Current price is USD$22.3744.7 ¢/lb
Price when purchased online
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About this item
Product details
No matter the size of your aquarium, Instant Ocean® sea salts and water care products offer the smartest, easiest way to bring the ocean home. Our scientifically formulated sea salts are used exclusively by many of the leading large-scale aquariums and research facilities across the country. Instant Ocean® Sea Salt is the most carefully formulated, most universally preferred sea salt in the world. It’s the perfect solution for creating the ideal marine environment. Free of nitrate and phosphate, this sea salt formula contains every major, minor and trace element necessary for the health of even the most delicate marine fish and invertebrates. Its superior solubility provides a clear, ready-to-use solution in minutes, quickly achieving and maintaining the ideal pH. The sea salt withstands separation during packaging and shipping. For your convenience, no special additives are required. The consistent formulation is ideal for mixing small or large quantities. This sea salt is sealed to ensure freshness and ease of use. Mix Instant Ocean Sea Salt with ordinary dechlorinated tap water – for small quantities, use ½ cup per gallon of water. Stir vigorously to ensure a good mix. Use immediately or aerate the water until it achieves oxygen/carbon dioxide equilibrium. See product label for complete use directions. Instant Ocean brand offers a full line of products, including sea salt, water treatments, test kits and accessories, to make sure your saltwater aquarium remains vibrant and healthy.
- FORMULATED SPECIFICALLY FOR MARINE AQUARIUMS: Contains every major, minor and trace element delicate marine fish and invertebrates need.
- DISSOLVES FAST: Superior solubility – provides a clear, ready-to-use solution in minutes.
- IDEAL pH: Quickly achieves and maintains ideal pH – free of nitrate and phosphate.
- CONVENIENT: No special additives are needed – will not separate during packaging and shipping.
- INSTANT OCEAN® SEA SALT: The industry standard for quality, consistency and value for more than 40 years.
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Aquarium water treatment type
Aquarium Water Treatment
Water contaminants removed
Other Debris
Brand
Instant Ocean
Size
15 lbs
Directions
Instructions
Mix Instant Ocean Sea Salt with ordinary dechlorinated tap water – for small quantities, use ½ cup per gallon of water. Stir vigorously to ensure a good mix. Use immediately or aerate the water until it achieves oxygen/carbon dioxide equilibrium. See product label for complete use directions. Instant Ocean brand offers a full line of products, including sea salt, water treatments, test kits and accessories, to make sure your saltwater aquarium remains vibrant and healthy.
Warranty
Warranty information
All products come with a 90 Day, or longer, manufacturer warranty
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Showing 1-3 of 15 reviews
Jan 8, 2026
Casey
Item details
Shape: 50 gallon
5 out of 5 stars review
Verified Purchase
Cost effective and easy
Super easy to use and absolutely effective. The measurements were straight forward for a one gallon jug of distilled water and my two hermit crabs couldn't be happier. Plus, this product is much cheaper when compared to other solutions.
Incentivized Review
Helpful?6AZKNH1TI6HX26962407
Dec 28, 2025
Sarah
Item details
Shape: 50 gallon
5 out of 5 stars review
Verified Purchase
customer
we love ordering this stuff through Walmart for our hermit crabs bc it's a lot for a great price ! It lasts awhile
Incentivized Review
Helpful?6AZKNH1TI6HX26962407
Jan 24, 2026
krista
Item details
Shape: 50 gallon
5 out of 5 stars review
Verified Purchase
Used this to set up our first salt tank and had no issues. Directions were easy to follow and after testing we had minimal adjustments to make.
Incentivized Review
Helpful?6AZKNH1TI6HX26962407
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