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What is Saltcorner?

Saltcorner is a website that is dedicated to the hobby of marine aquarium keeping and is the creation of aquarium author Bob Goemans, who has written a column of the same name for many years.

Whether you're looking for information about animals and plants/algae; for informative articles by noted aquarium authors; for product or book reviews; for photo galleries of impressive home aquariums; for information about Bob's books; or troubleshooting/advice correspondence on a wide range of topics, there's a lot of information here. And it's all free to you thanks to the generous support of our website sponsors who keep the website's lights turned on.

Use the tabs above to navigate to different parts of the website, or click on any link that catches your eye. I hope you find the site useful and informative!

Article Spotlight


By Articles from

(Posted with and Breefcase's permission from works written in When Calcium Hydroxide solution (Kalkwasser) is slowly dripped into your aquarium, it captures free Carbon Dioxide present in the tank water and converts it to Bicarbonate ions (which is a good thing), like this: Ca++ + 2(OH-) + 2(CO2) Ca++ + 2(HCO3-) If you drip too fast or if there is not enough Carbon Dioxide available in the water, your shiny new Bicarbonate ions will be converted to Carbonate ions (a bad thing), like this: Ca++ + 2(OH-) + 2(HCO3-) Ca++ + 2(CO3--) + 2 H2O The Carbonate more.

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NEW!Book Spotlight:

The 'Living' Marine Aquarium Manual

Read it HERE for FREE! No need to sign up. No catches. No gimmicks.

Photo Gallery Spotlight

See more in Steve Weast's "850 gallon Aquarium" gallery.
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Review Spotlight

Book Review of The Reef Tank Owners Manual

By John H. Tullock

TITLE: The Reef Tank Owners Manual AUTHOR: John H. Tullock PUBLISHER: Coralife Publication ISBN 0-9640147-1-8 PAGES: 268 PRICE: $29.95 This is the 3rd Edition of "The Reef Tank Owners Manual." It is also the best by far and a welcome addition to the growing body of literature about reef aquariums. John shares his many years of experience in a easy to understand format that makes successful reef keeping a joy. To begin, the book starts out with a very brief "Foreword" written by Julian Sprung. The following "Introduction" describes marine aquarium styles, including the Algal Turf more.

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Q&A Letter Spotlight

Matilda writes to Bob about: Undergravel Filters

Hi Bob, I was reading about this filter, which I came across on EBay and was going to purchase it but I have no idea how it works. Do you have any info on it? Thank you! Matilda [response] Hi Matilda, Thanks for your letter and the photos! That appears to be one of the original French Undergravel Filters, which appeared in the early 1950's and which began the undergravel filter (UGF) timeframe in aquarium history. In fact, I had the first one in the US in 1950! As a keepsake it might have some value, but as a filter, it's quite worthless in this day and age. Below is some text more.

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