Nature's Ocean Nutri-SeaWater Natural Live Ocean Aquarium Saltwater, 4.4-gal jug

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About This Item

Details

  • No need to wait for water cycling–instantly add fish to your new in-home saltwater aquatic display.
  • Contains 100% natural living ocean seawater–does not remove or modify what Mother Nature intended.
  • Natural live marine heterrotophic, autotrophic and chemolithotrophic bacteria provide proper inorganic balance.
  • Replaces missing natural live marine bacteria, trace elements and critical nutrients needed to maintain ideal tank water quality.
  • Reduces the need for additional saltwater treatment products and helps maintain proper pH by providing improved buffering capacity.

Instructions

Learn More About Nature's Ocean From Our Team of Experts

Questions & Answers

12 Customer Questions


What's the specific gravity of this pre-made saltwater? I wouldn't want a big change in salinity while doing the water changes. Thank you

Answer by ChewyDec 15, 2017
The specific gravity of this Saltwater is 1.027.

What is the density of the Nutri-SeaWater?

Answer by ChewyJan 24, 2019
The density of the product is 1.027.

How many jugs would I need for a 10 gallon?

Answer by ChewySep 19, 2021
Each jug contains 4.4 gallons of water. For best results use 100% Nutri-Seawater. For routine water changes, it is recommended to change a portion of your aquarium water 10-20% of volume regularly with Nutri-Seawater to restore your marine system. For new aquarium setup: use Nature's Ocean Bio-Activ Live Aragonite Reef Sand or Substrate along with Nutri-Seawater to provide the perfect start.

new to salt water. Does this water need cycling if added with live sand?

Answer by ChewyJun 11, 2018
Live, naturally-occurring planktonic bacteria provide instant water cycling with no need to wait days before adding fish.

4.3
Rated 4.3 out of 5 stars
74 Ratings

37 Customer Reviews



Rated 2 out of 5 stars
By Alex on Dec 11, 2025

Great water.

What wasn’t great, was the shipping. Like everyone else, the box was destroyed and most were leaking. I didn’t take a photo and I didn’t want to deal with a return

What wasn’t great, was the shipping. Like everyone else, the box was destroyed and most were leaking. I didn’t take a photo and I didn’t want to deal with a return or exchange so I just dealt with it. But their process of shipping these is garbage.


Rated 5 out of 5 stars
By Michael on Dec 18, 2025

Super water

Don't use anything else! Use this! You'll be glad you did!

Don't use anything else! Use this! You'll be glad you did!


Rated 5 out of 5 stars
By Sandr on Dec 28, 2025

Fish

I need the saltwater

I need the saltwater


Rated 5 out of 5 stars
By Angel on Oct 11, 2025

Fastest shipping

And good service

And good service


Rated 5 out of 5 stars
By casey on Jul 7, 2025

within expiration date on items

looks great

looks great


Rated 5 out of 5 stars
By Jennifer on Jun 30, 2025

Excellent

Great value

Great value


Rated 4 out of 5 stars
By Philip on Sep 29, 2024

Fast delivery!

Shipping label needs to be put upright product being delivered upside down. Luck no leaks so far.

Shipping label needs to be put upright product being delivered upside down. Luck no leaks so far.


Rated 5 out of 5 stars
By Purvis on Jun 25, 2024

Excellent!

The package with two 2.2 gallon containers is much better than shipping the 4.4 gallon container as it leaked or was damaged in the past due to the boxes being very

The package with two 2.2 gallon containers is much better than shipping the 4.4 gallon container as it leaked or was damaged in the past due to the boxes being very heavy and handling.


Rated 5 out of 5 stars
By Bruce on Jul 31, 2024

Awesome

Love the dual plastic jugs! They make it way easier to pour too. I use them for R.O. as well.

Love the dual plastic jugs! They make it way easier to pour too. I use them for R.O. as well.


Rated 1 out of 5 stars
By Michael on May 31, 2024

Broken box delivered, water everywhere

Ordered reef water for my fish tank. Box arrived, split with the water having leaked. Completely useless now.

Ordered reef water for my fish tank. Box arrived, split with the water having leaked. Completely useless now.