Daily Archives: December 6, 2012

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Mr. Saltwater Tank TV Friday Am Quick Tip #104: Beer + DI Resin = Clean Tank

Saltwater tanks that use RODI water very likely look great. And when it comes time to replace your deionization (DI) resin, here’s how to get the most bang for your buck by using your favorite long neck bottle of beer.Saltwater tanks that use RODI water very likely look great. And when it comes time to replace your deionization (DI) resin, here’s how to get the most bang for your buck by using your favorite long neck bottle of beer. Tagged as: deionization , DI , friday am quick tip , RO DI
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Extreme low tide at Coconut Island

005 Extreme low tide at Coconut Island

Porites compressa on the reef flat sitting high high and fry during an extreme low tide.

 The Hawai’i Institute of Marine Biology (where I perform much of my research as a graduate student) is located on Coconut Island–or Moku o Loe, in the Hawaiian–in Kāne’ohe Bay on the island of O’ahu, HI. The island is surrounded by a wonderful fringing reef with a well developed reef flat. A major feature of the oceans is the tidal cycle. The tides are driven primarily by the gravity of the moon, and secondarily by the gravity of the sun. When the gravity of the moon and the sun pull on the ocean at approximately a right angle to each other we get the so-called neap tides, which have the smallest tidal range (the difference between high tide and low tide) for the month. We get neap tides around during the first quarter and the third quarter of the lunar cycle (i.e., twice per month). When the gravity of the moon and sun pull… More:
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How to take a picture of your aquarium: photography course part I

img3724w How to take a picture of your aquarium: photography course part I During my visit to the eighth edition of Salento Aquarium, a show in Italy, I did a lesson on a subject that I really like “Aquarium, how to take pictures“, and are therefore here, as promised, to propose a mini-course as a guideline how to photograph in the aquarium, getting the best with our equipment, obviously the course is open to all, since most of what is written applies to any photographic genre, even though the examples will focus on the photographs in the aquarium. I hope that the course will be useful and that you enjoy reading it, and if you have any requests please leave your comments. This is the first part that covers the basics of photography, the choice of lenses and the setting of the camera, the second part will address specifically the photographs in the aquarium, going into the details of how to photograph aquariums, fish and corals , and the last part will cover instead the development of the digital negative, the RAW file.… More:

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