technical
redcoral
HDL is continuously developing innovative products to help improve your fresh and saltwater systems.

In comparison to the pristine habitats where many of our aquarium fishes are found, the closed environment of the aquarium is far from natural.

One of the most limiting factors of the aquarium is the lack of water exchange. In nature coral reefs, rivers and lakes are under a constant influx of fresh water. In a closed system nutrients are used up, or build up, causing an imbalance that can lead to excessive nitrate levels, unwanted algae growth, and other more serious problems.

Check out the following technical pages for solutions to some of the most common problems of today's aquatic systems.

TECHNICAL PAGES
24 Hour Cycle (Jack's Speech)
Aerobic Nitrate Reduction
Hair Net Algae Reduction
FAQs
Testimonials!

orders
If you would like to purchase any of our products please visit the Orders section, where you will find an online form that will let you select the products you would like information about. After submitting the form we will promptly e-mail you our pricing and shipping information.
links
Visit the Links section for a variety of the Web's most interesting aquarium and fish sites. You will also find links to some of our many distributors.
contact
Visit the Contact page to reach HDL by regular mail, e-mail, phone or fax. You will also find links to our Webmaster, and HDL's various Technical Wizards. This is also the place to find a special online form that will allow you to send us a description of any type of technical problem you may be experiencing with your fish. Our Lab will be more than happy to try and come up with a solution for you.

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