5 Best Selling Saltwater Aquarium Products

5 Best Selling Saltwater Aquarium Products

Are you itching to buy a best selling saltwater aquarium product for your tank? Want to know what other blog readers are buying for their saltwater aquarium?  I have to admit, I was curious to see what other people are buying–and now that I know, I’m sharing that information with you.

How I determined what the 5 Best Selling Saltwater Aquarium Products were

As you may already know, one of the ways I offset the costs of running this website is through an affiliation with Amazon.com. This is a type of advertising program, where they pay a small commission to website owners like me, when a person like you clicks on a special affiliate link and purchases a product on amazon.com.
Amazon pays that commission out of ‘their share’, at no additional cost to you, and you still get the great pricing and shipping deals from World’s largest online retailer. The products on this 5 Best selling Saltwater Aquarium Products list are the most popular products purchased by the readers of Saltwater Aquarium Blog over the past year. Take a look at the list and leave a comment below to let me know what you think.

#5 Best selling saltwater aquarium product

HDE LCD Thermometer

#5 best selling saltwater aquarium product

Time for a thermometer upgrade? When I was starting out, in the hobby all those years ago (I’m feeling pretty old right now) I had one of those adhesive thermometer strips that indicated what the temperature was because the strip turned different colors. Those adhesive thermometers are cheap, but a bit absurd, because you can never really tell exactly what the temperature is.

I’m glad to see the readers of Saltwater Aquarium Blog are smarter than I was, when I started out, because the #5 Best selling saltwater aquarium product on the site is the HDE LCD Thermometer. No more guesswork. This inexpensive device has a probe you put in the water and an LCD digital read-out. No more trying to figure out if the blue color is over 74,76 or 78, this puppy will tell you the exact temperature down to a tenth of a degree.

This is the exact model I use in my tank and it has worked well for years.

Check it out on Amazon.com

#4 Best selling saltwater aquarium product

API Reef Master Test Kit

Keeping your aquarium water in pristine condition is the name of the game. You get there by starting with a high quality salt mix, testing the water routinely and consistently performing partial water changes. I’m glad to see that the Saltwater Aquarium Blog community is a committed group, because the #4 Best selling saltwater aquarium product on the site is the API Reef Master Test Kit. This test kit comes with tests for calcium, hardness, nitrates and phosphates, which is great for the advanced reef keeper. While you’re shopping, pick up a copy of the Reef Journal to record your results and track your progress.

Check it out on Amazon

#3 Best selling saltwater aquarium product

The New Saltwater Aquarium Guide: How to Care for and Keep Marine Fish and Corals

The #3 Best selling saltwater aquarium product on amazon.com, not surprisingly, is an e-book. Books are the original, core business at Amazon—and with the launch of their Kindle products, they have truly revolutionized the way we consume knowledge in book form. I’m humbled and flattered to report that The New Saltwater Aquarium Guide: How to Care for and Keep Marine Fish and Corals is the #1 best selling book and the #3 saltwater aquarium product overall. Thank you, I am humbled to have you hear as a reader and appreciate all you are doing to support me.

Download a copy today

#2 Best selling saltwater aquarium product

API Saltwater Master Test Kit

The Saltwater Master Test Kit, by API is the # 2 Best selling saltwater aquarium product. This kit differs from the Reef Master kit, and is actually a nice complement to the reef master kit, because it has tests for nitrites, ammonia and pH. I’m not sure why API has the nitrates test in both kits…but it does. 

Order this kit from Amazon

#1 Best selling saltwater aquarium product

And now the moment you’ve been waiting for. Drumroll please. May I have the envelope. The # 1 Best selling saltwater aquarium product purchased by you, the readers of Saltwater Aquarium Blog is…

Instant Ocean brand Sea Salt Mix

This product is clearly the #1 winner. Nearly 1 out of every 10 products purchased on Amazon was a box or bucket of Instant Ocean Sea Salt Mix, which is the brand of salt mix I use in my tanks and is also the #1 brand in the country.

See what it costs with free shipping


I’m excited about this list and what it means. Two of the top 5 products are test kits, which means you believe in the value of testing your water and mainting high quality water parameters. A little bit further down the list (below #5) were other individual tests, like hardness, calcium and phosphates, which is another good sign.

I’m not at all surprised that the #1 product is Instant Ocean Sea Salt Mix. That is a very popular product and salt mix is typically one of the biggest ‘dry goods’ expenses. But I am a bit surprised that there were not other consumable products, like nori, saltwater flakes or pelleted foods, since they are also rapicly consumed.

I also want to take a moment here to say thank you to those of you who have purchased something via one of the affiliate links on this site. I appreciate your support.


What is your reaction to this list is there anything you are surprised isn’t here? Anything that is a bestselling product that you think isn’t worth the money?

Let me know what you think in the comment section below



  1. I have all the above. I couldn’t agree more. They are all necessary!!

      1. Much more reliable than the test strips. I can use two different brands of test strips at the same time and their results are always different from one another. Quite frustrating. So I use my test kit once a week or more if my test strips indicate anything is a little off and my test kit confirms it until the water issue is resolved. My main issue with the test kit is matching the color in the test tube to the colors on the card.

Leave a Comment