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Item #:
220433593
Instant Ocean Sea Salt 50 Gallons, For Marine Aquariums, Fast Dissolving
Item #:
220433593
GMD 2390
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Instant Ocean Sea Salt is the most carefully formulated, most universally preferred sea salt in the world.
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What Stands Out
Fast Dissolving
Instantly mixes for quick setup, reducing time and effort when preparing marine aquariums to create a stable saltwater environment for fish and corals.
High Quality
Formulated with premium ingredients, ensuring optimal mineral balance for a healthy marine ecosystem, supporting the growth and vitality of aquatic life.
50 Gallon Yield
Conveniently provides enough salt for 50 gallons, making it ideal for both hobbyists and professional aquarists, offering great value and longevity in use.
Product Details
| Brand Name | Instant Ocean |
| Manufacturer | Instant Ocean |
| UPC | 719279584394 051378014007 |
| Global Trade Identification Number | 00051378014007 |
| Model Number | AQ-SS350-10 |
| Manufacturer Part Number | AQ-SS350-10 |
| Unit Count | 240 Ounce |
| Item Type Name | Aquarium Salt |
| Included Components | Instant Ocean Sea Salt |
| Liquid Volume | 50 Gallons |
| Item Weight | 6.8 Kilograms |
| Item Form | Granules |
| Pet Type | Dog |
| Target Species | Fish |
| Allergen Information | Abalone Free |
| Product Dimensions | 16.5 x 13 x 2.5 inches (41.9 x 33 x 6.4 cm); 14.99 Pounds (6.8 kg) |
| Brand | Instant Ocean |
Who Should Buy?
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Marine Aquarium Owners
Ideal for hobbyists maintaining marine aquariums, providing essential nutrients for fish and coral health.
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New Aquarists
Great for beginners as it quickly dissolves and simplifies the preparation of seawater.
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High Volume Users
Perfect for those needing large quantities of salt, as it mixes easily for up to 50 gallons.
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Freshwater Aquariums
Not suitable for freshwater setups as it contains marine-specific salts that can harm freshwater life.
Product Description
Instant Ocean Sea Salt 50 Gallons, For Marine Aquariums, Fast Dissolving
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Customer Questions & Answers
-
Question:
What is Instant Ocean Sea Salt and how is it used?
Answer: Instant Ocean Sea Salt is a premium synthetic seawater mix designed for home aquariums. It's specifically formulated to create an ideal marine environment by mirroring natural seawater conditions. Simply mix the salt with fresh water according to the instructions on the package for optimal results. Reef and fish aquarists alike use it to maintain stable pH and salinity levels, ensuring a healthy habitat for fish, coral, and invertebrates. -
Question:
How do I mix Instant Ocean Sea Salt for my aquarium?
Answer: To mix Instant Ocean Sea Salt, start by adding one cup of salt per gallon of fresh water in a clean mixing container. Stir the mixture until fully dissolved, which usually takes about 30 minutes. Monitor the specific gravity using a hydrometer to ensure it's between 1.020 and 1.025, suitable for most marine tanks. This careful preparation helps create optimal living conditions for your aquatic life, promoting a thriving aquarium ecosystem. -
Question:
What size aquarium is suitable for Instant Ocean Sea Salt 160 gal?
Answer: Instant Ocean Sea Salt 160 gal is designed to cater to saltwater aquariums of up to 160 gallons in volume. It's an excellent choice for larger setups, including reef tanks, fish-only setups, or mixed marine systems. This bulk option is perfect for hobbyists looking to establish or maintain sizeable aquatic environments, allowing for greater stocking density and diversity of marine species. -
Question:
Is Instant Ocean Sea Salt suitable for reef aquariums?
Answer: Yes, Instant Ocean Sea Salt is suitable for reef aquariums. Its balanced formulation contains essential trace elements needed for the health of coral and other marine life. It’s specifically designed to support the unique requirements of reef environments, helping maintain proper alkalinity and calcium levels. By using this salt mix, aquarists can successfully cultivate stunning coral reefs and ensure vibrant marine life. -
Question:
How often should I change the water with Instant Ocean Sea Salt?
Answer: Water changes in your aquarium using Instant Ocean Sea Salt typically depend on your tank's specific needs, but a common recommendation is every 1-2 weeks, with a change of about 10-20% of the total water volume. Regular water changes help remove debris, replenish essential minerals, and maintain stable water parameters, all of which contribute to a healthier aquarium ecosystem and thriving aquatic life. -
Question:
What are the advantages of using Instant Ocean Sea Salt over other brands?
Answer: Instant Ocean Sea Salt offers several advantages, including a well-balanced formulation that closely resembles natural seawater, promoting a healthy marine environment. It dissolves quickly and thoroughly, eliminating the hassle often associated with mixing salts. Additionally, it contains a complete range of trace elements and necessary nutrients tailored for both fish and corals, making it a preferred choice for many aquarium enthusiasts who prioritize aquatic health. -
Question:
Can Instant Ocean Sea Salt be used for freshwater aquariums?
Answer: While Instant Ocean Sea Salt is primarily designed for marine environments, some aquarists use small amounts in freshwater tanks to provide trace minerals. However, it’s important to use it sparingly, as freshwater fish have different salinity requirements. For specific situations like adding salt for treatment against certain diseases, consult reliable sources or aquatic professionals for proper usage to ensure the well-being of your freshwater setup. -
Question:
What is the proper storage method for Instant Ocean Sea Salt?
Answer: To preserve the quality of Instant Ocean Sea Salt, store it in a cool, dry location away from direct sunlight and humidity. Keeping the bag sealed is crucial to prevent moisture absorption, which can lead to clumping or loss of effectiveness. Proper storage ensures that the sea salt remains in optimal condition for whenever you're ready to perform water changes or set up a new aquarium. -
Question:
What if my Instant Ocean Sea Salt mix does not dissolve completely?
Answer: If your Instant Ocean Sea Salt mix does not dissolve completely, it may be due to insufficient mixing or not allowing enough time for dissolution. You can remedy this by stirring more vigorously and letting it sit for an additional 30 minutes. Ensure you're using water at a suitable temperature (around 75°F) to facilitate the process. Incomplete dissolution can affect the salinity and quality of your aquarium water, so it’s essential to achieve a fully mixed solution. -
Question:
Where can I buy Instant Ocean Sea Salt 160 gal?
Answer: You can buy Instant Ocean Sea Salt 160 gal on Ubuy, which offers a convenient online shopping experience for aquatic enthusiasts across various regions. Ubuy provides an extensive selection of aquarium products, ensuring you can easily find the right salt mix for your aquatic needs.
Instant Ocean Aquarium Water Treatments AQ-SS350-10 Editorial Review
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“Accurate delivery timing given”
16 June 2026 · via Trustpilot
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“Not madly expensive like I thought, and much quicker than promised.”
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6/7/2026 · via Trustpilot
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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Last Updated on July 16, 2026
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GMD 2390
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Features & Benefits
- Expertly formulated for marine aquariums with every essential element for fish and invertebrates.
- Superior solubility ensures a clear, ready-to-use solution within minutes.
- Quickly achieves and maintains ideal pH levels, free from harmful nitrates and phosphates.
- Convenient mixing with just ordinary dechlorinated tap water—no special additives required.
- Trusted by large-scale aquariums for over 40 years, setting the industry standard.
- Available alongside a full line of compatible water care products for vibrant aquarium health.
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