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Feature Article: Biological Succession and Trophic Structure in the Reef Aquarium (Part 1) by liquid — last modified Nov 14, 2017 11:52 PM
Harmony and balance. Kenneth outlines the keys to reefkeeping success by focusing on two terms that might be unfamiliar to the average hobbyist: biological succession and trophic structure.
The Carbon Continuum: Heterotrophic Bacterioplankton and Reef Food Webs by liquid — last modified Sep 27, 2017 12:31 AM
Matter is neither created or destroyed, and carbon is no exception. Kenneth Wingerter details the important transformation of carbon in reef environments and the implications for reef keepers.
pH: What It Is, Why It is Important, and Ways to Measure It with an Emphasis on Hanna Instruments' pH Meters by liquid — last modified Aug 15, 2017 11:58 PM
Dana Riddle helps aquarists understand pH and describes the various methods to measure pH, including a review of multiple Hanna Instrument pH meters.
Feature Article: A Salty Thumb by liquid — last modified May 24, 2017 12:42 AM
What does it mean to be a good reefkeeper? Our Editor in Chief (and MASNA's 2015 Aquarist of the Year) shares the intuition he's developed over sixty years of experience. Terry then takes us to another great LFS: Bio Reef in Tampa, FL.
Feature Article: Time-lapse photography of marine life by liquid — last modified Feb 01, 2018 05:35 PM
With the advent of smart phones, aquarium photography has changed significantly over the last few years. Today, social media and aquarium fora are filled with decent quality images of freshwater and marine life. The era of DSLR cameras has still not passed, however. Not only do these cameras provide higher quality images, they also offer the photographer plenty of additional creative options. One of these is time-lapse photography, which I will discuss in detail in the following article.
How to Grow Corals Quicker, Part II: Combined Effects of Water Velocity and Alkalinity Concentrations by liquid — last modified Feb 14, 2017 10:46 PM
If we want to grow corals more quickly, it helps to understand the interplay of the many variables that affect corals. Dana explores the relationship between alkalinity, water flow, photosynthesis, and nutrients.
Editorial: Excellent Retail Reef Stores: AquaCorals by liquid — last modified Jan 31, 2017 10:28 PM
In his travels, Terry highlights the excellent reef stores he encounters. Reef LFS can be found in some of the most surprising locations. The people and passion is what make a store great.
Feature Aquarium: Tony's Reef by liquid — last modified Jan 14, 2017 02:21 PM
Two decades of commitment and a lot of modern technology has helped Tony (AKA "Reef Bloke") bring to life a captive ecosystem that brims with vibrant coral reef life.
Product Review: Apogee Instruments' MQ-500 Quantum Meter with Notes on Why Measuring Light Intensity is Important by liquid — last modified Dec 21, 2016 12:51 AM
Dana reviews Apogee's premium MQ-500 Quantum (PAR) Meter and explains why reefkeepers should measure the light levels in their aquariums. Apogee has also introduced a new quantum meter specifically designed for underwater aquarium use.
Comprehensive Marine Quarantine - Transfer Method II and Hyposalinity by liquid — last modified Dec 01, 2016 01:02 PM
Advanced Aquarist welcomes our newest contributor, Alex Wilson. Alex describes how to quarantine marine-fish by combining hyposalinity and the "Transfer Method II" to prevent the two most common and virulent fish diseases: Ich and flukes.
How to Grow Corals Quicker: Effects of Various Alkalinity Concentrations on Rates of Zooxanthellae Photosynthesis by liquid — last modified Sep 28, 2016 10:18 PM
For corals to grow at their best, many chemical and physical conditions must be optimized. Dana Riddle examines the effects of varying levels of dissolved bicarbonates on coral photosynthesis and growth.
LED Lamps from Lowe's and Home Depot: Intensities (PAR) and Spectra by liquid — last modified Aug 24, 2016 12:36 AM
Walking through big-box home improvement stores, we see an increasing selection of LED bulbs. Are any of these bulbs suitable for aquaria? Dana investigates seven LED lamps.
Product Review: Tunze Turbelle Nanostream 6020 and 6040 Propeller Pumps by liquid — last modified Jul 06, 2016 01:03 AM
From flow to power consumption, noise levels to heat transfer, Dana Riddle puts the Tunze Turbelle Nanostream propeller pumps through their paces in his extensive review.
Feature Study: Corals as the ultimate vegans? by liquid — last modified Jun 08, 2016 12:02 AM
Can corals thrive on light and inorganic nutrients alone? Preliminary research suggests scleractinian corals require an external organic food source in addition to light and inorganic nutrients to maintain normal growth.
Feature Article: The Great Hawaiian Coral Bleaching Event of 2015: The Untold Story by liquid — last modified May 11, 2016 01:37 AM
Dana Riddle reports about Hawaii's highly publicized 2015 mass coral bleaching event, its (unreported) recovery, and the science behind these phenomenons.

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A new and very gold fish by Leonard Ho — last modified Jun 20, 2018 11:26 PM
Dear Carassius auratus, with all due respect, I think I might deserve your common name more than you do. Sincerely, Pethia sahit
A new reef micro shrimp named after a hobbit by Leonard Ho — last modified Jun 18, 2018 11:38 PM
This chubby lil' guy is named Odontonia bagginsi. These shrimps live inside sea squirts and are currently only known from the coral reefs of Tidore, Indonesia.
Sea urchins see with their feet by Leonard Ho — last modified Jun 12, 2018 11:41 PM
Sea urchins lack eyes, but can see with their tentacle-like tube feet instead, previous research has indicated. Now, researchers at Lund University in Sweden have tested their vision in a new study, and shown that while sea urchins have fairly low resolution vision -- it is good enough to fulfil their basic needs.
Time lapse of Acropora growth by Leonard Ho — last modified Jun 07, 2018 01:31 AM
Even fast-growing corals such as SPS only lay down millimeters of growth per day. The only way to see their growth "in action" is many weeks of photography stitched together in a time-lapse. Peter Kragh has done exactly this and shares his results.
A new invention safely brings deep-water fishes to surface by Leonard Ho — last modified Jun 04, 2018 10:47 PM
Fishes collected from deep waters require time-consuming decompression to bring them to the surface healthy and alive. Now a new invention called SubCAS - designed and first built by Matt Wandell! - allows divers to to safely and efficiently surface fishes within a pressurized chamber.
An Amazon Aquarium at by Leonard Ho — last modified May 31, 2018 12:30 AM
With the support of the world's largest ecommerce website, aquarium systems designer Tenji Aquarium has built some of the world's most remarkable aquatic exhibits we've laid eyes on.
The BIOTOPE AQUARIUM Project by Leonard Ho — last modified May 17, 2018 02:29 PM
The BIOTOPE AQUARIUM Project aims to create the first multilingual interactive mobile app to help aquarists recreate habitats as close to nature as possible.
The ultimate vacation destination for reef lovers? by Leonard Ho — last modified May 16, 2018 11:30 PM
How would you like to vacation in the Maldives ... living UNDERWATER with the corals and reef fishes? This dream vacation can be yours for the reasonable cost of only $50,000. PER NIGHT.
The blue-throated fairy wrasse: a new species by Leonard Ho — last modified May 14, 2018 11:37 PM
At a cursory glance, we tend to lump similar-looking reef fish into a monolithic species and chalk up differences as variants. But upon closer examination, we are finding sufficient distinction to satisfy the description of a new species. Cirrhilabrus cyanogularis is a case in point.
Schooling fish expend less energy due to flow dynamics by Leonard Ho — last modified May 10, 2018 01:06 AM
We all know fish school for defense against predators. Schooling also enhances foraging success and increases success in finding a mate. Now new advanced hydrodynamic modeling proves that schooling also increases swimming efficiency.
Hypnotizing coral time-lapse by Leonard Ho — last modified May 07, 2018 01:22 AM
Technology is awesome! It is allowing us to view corals in ways we could not have imagined just a couple of decades ago. After over 50 hours of shooting and editing, Elite Reef Denver composed this mesmerizing time-lapse of some of the most popular corals.
New fun fact: Corals can produce omega-3 fatty acids by Leonard Ho — last modified May 02, 2018 11:38 PM
The generally held principle is that animals get their omega-3 fatty acids from plants and microbes (algae and bacteria), but new research has found that some marine animals such as corals, worms, and molluscs can also produce omega-3!
A new, slender Aussie rainbow fish species by Leonard Ho — last modified May 01, 2018 12:05 AM
Cairnsichthys bitaeniatus is a new species of rainbowfish described from an apparently-isolated population in the Daintree rainforest in northeastern Queensland, Australia.
Microbe populations in saltwater aquariums highly dynamic by Leonard Ho — last modified Apr 26, 2018 01:28 AM
In closed systems without water changes, scientists hypothesized that microbial composition would stabilize and become relatively homogeneous and static. However, a new, first-of-its-kind 14-month study of Gerogia Aquarium's Ocean Voyager exhibit tells a different story.
Hermit crabs that blanket themselves with anemones instead of shells by Leonard Ho — last modified Apr 23, 2018 02:14 PM
Just about every hermit crab species seeks mobile shelter within empty shells. Not blanket-hermit crabs. These oddball crustaceans have developed a special relationship with anemones where anemeones directly wrap around their bodies like ... well, blankets. Five new species - discovered in 1888! - have just been described.


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