Instant Ocean 25 Gallon Sea Salt
Instant Ocean Sea Salt is the most carefully formulated and universally preferred sea salt in the world. It is the #1 choice of hobbyists, public aquariums, and scientific research facilities, having set the industry standard for quality, consistency, and value for over 40 years.
Formulated with every necessary major, minor, and trace element, this sea salt contains no nitrates or phosphates. Developed through sophisticated biological and chemical testing, each batch is independently analyzed to ensure consistent high quality.
Product Specifications
| Item | Details |
|---|---|
| Volume | 25 gallons |
| Brand | United Pet Group – Spectrum |
| Item Number | AIOSS25 |
| Available Sizes | 10 gal, 50 gal, 160 gal pail, 200 gal Royal |
FAQ
Is Instant Ocean Sea Salt suitable for all types of aquariums?
Yes, Instant Ocean Sea Salt is widely used in marine aquariums, public aquariums, and research facilities due to its balanced formulation and consistent quality.
Does this sea salt contain nitrates or phosphates?
No, Instant Ocean Sea Salt contains no nitrates or phosphates, making it ideal for maintaining a healthy marine environment.
How is the quality of each batch ensured?
Every batch of Instant Ocean Sea Salt undergoes rigorous biological and chemical testing, and is independently analyzed to ensure consistency and high quality.

Wendy Campbell –
I’ve used this salt in my 55-gallon reef tank for over a year. The water stability is excellent and my corals have thrived. No signs of algae growth, which I’ve seen with other salts. Highly recommend for marine setups.
Edward Hemmings –
As a beginner in marine aquariums, I was worried about using the wrong salt mix. Instant Ocean has been a game-changer. My tank has stayed balanced, and the fish are active and healthy.
Boris Rees –
The salt is easy to measure and mixes well. I’ve used it in multiple tanks and it performs consistently. A bit expensive per gallon, but worth it for quality.
Alexander Jones –
Used in a public aquarium setting. The salt’s consistency and element balance are unmatched. Staff report fewer water parameter fluctuations compared to other brands.