Category Archives: Tanks

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HLLE and the Activated Carbon Connection

HLLE in an ocean surgeonfish (Acanthurus bahianus) caused by the use of activated carbon. Many different factors have been considered as possible causes of the disease known as Head and Lateral Line Erosion (HLLE)—a condition that typically causes disfiguring tissue erosion on the head and along the sensory lateral line of certain marine fishes. Poor water quality, nutritional deficiencies, protozoa of the genus Hexamita, stray voltage, and activated carbon use are just some of the potential causes that have been floated over the years. However, as Jay Hemdal explains in the following excerpt from his new eBook, The Salt Smart Guide to Preventing, Diagnosing, and Treating Diseases of Marine Fishes, there is now some solid scientific backing to the notion that activated carbon can cause this condition. From Chapter 3: Husbandry, Environment, and Your Fishes’ Health “A relationship between the use of activated carbon in aquariums and the development of HLLE in surgeonfish has been positively shown in two scientific studies. Other than that, no formal studies have been undertaken that identify other causes. However, a multitude of unproven causes have been presented by various people. Commonly, stray electrical currents and vitamin deficiencies are cited as causes, but one of the studies mentioned above ruled these out as common causes

Have You Stumbled Upon Your Sole Mate? Looking To Make It O-Fishal?

 Ah, the age old adage, “there’s plenty of fish in the sea” (ok, “Belinda the Single Fish” might have a less than optimistic look on that semblance, but no one likes a party-pooper). Now, if you’re lucky enough to have happened upon that one perfect little fishy just for you in the whole deep blue, and you’re head-over-heels madly in love and want to make an extravagant, whimsical gesture of romance and spend the rest of your lives swimming side-by-side together, this might just be the perfect way to do just that.… More:

Tank Crisis: Putting Things Into Perspective With Bill Wann

Untitled-910924696_878388872182691_1871071223625801332_nIf you’ve been in this hobby for any amount of time, you’ve most likely experienced a crisis of some sort – anything from a little hiccup to a full blown catastrophic failure. The average hobbyist, however, is dealing with something like a 75 gallon system, with some larger systems topping off around the 400 gallon mark, and impressive builds flirting with quadruple digits. Then there’s Bill Wann and his awe-inspiring 20,000 gallon home reef system. Bill is an apex hobbyist. When you design and construct your own 20,000 gallon tank and proceed to constantly improve it, there aren’t many to look up to. But disaster sometimes strikes even the best of us, and Tuesday, in the wee hours of the morning, 20,000 gallons hit the floor.… More:

Cool Video From Groundbreaking Glass Fish Eye Implant

I recently wrote about the groundbreaking procedure of glass eyes being implanted into two Rockfish at the Vancouver Aquarium. A video of the unique operation has recently been released. It shows the talented husbandry team at the Vancouver Aquarium completing the complex surgery.

Having worked as and Aquarist and Researcher at the Vancouver Aquarium from 1996-2003, it is great to see a couple of my colleagues in the video and that the Aquarium continues to be a leader in fish health and husbandry. MoreMore:

Write-up Wednesday: Goldflake Angelfish (Apolemichthys xanthopunctatus)

The Goldflake Angel is one of the most striking angelfish available for a saltwater tank. Their bodies are a combination of bright and muted yellow areas with brighter spots of yellow which give the fish its name. As a juvenile, the fins are almost completely yellow with a black spot on the rear of the dorsal fin. When the fish matures into an adult the fins become black which make the fish even more striking. Add on a mouth that is purple-blue and you’ve got on eye-catching fish.

A juvenile Goldflake that is in the process of becoming an adult

While these fish are available in smaller sizes, they can grow up to 10” (25 cm) as an adult which means they’ll need a lot of swimming space. Goldflakes will do best in tanks sized 150 gallons (567 L)or better. Please do not be fooled into thinking that a small specimen is a dwarf angel and will do well in a small tank.

Like most angelfish, Goldflakes are definitely “fish in the fringe” as they can develop tastes for corals. Adding to the risk is the fact that you won’t know if the fish nips or eats corals until you place the fish in your tank. My Goldflake Angel is a model citizen and ignores all coral. I’m fully aware the fish’s taste could change and I’m ok with that fact. If you love your coral more than your fish, or you don’t want to risk having to remove the fish from your tank, the Goldflake Angel is not for you.

Scientology V. Winter The Dolphin?

Clearwater, Florida is a pretty quiet place on the West Coast of Florida. Clearwater is also the spiritual headquarters to Scientology. While, I would imagine most residents of Clearwater are very excited for the major renovations which are brewing for the Clearwater Marine Aquarium, home of the famous and inspiring dolphin with prosthetic tail ‘Winter”. winter-the-dolphin-2Winter-dolphin-tales-winter-the-dolphin-25515452-300-207More:

AquaNerd’s Top 10 Stories from 2014

Phew…2014 is almost over. And while it has been a fun year, it has also been an exhausting one. But, we made it, and we can look forward to the brand new adventures that await for us in 2015. Before we can move on, however, we must pay our respects to the passing year with a robust recap of the top 10 stories that were featured on the AquaNerd Blog during that time. So, without further adieu, here is our list of posts we got the most mileage out of.

Anemone Lookalike: The Long-Tentacled Plate Coral

Long-tentacled Plate Coral (Heliofungia actiniformis)Easily mistaken for an anemone at first glance, Heliofungia actiniformis is a large-polyp stony (LPS) coral that can be an excellent option for reefkeepers with modest-sized systems. Even relative newcomers to the reefkeeping hobby can succeed with this species, provided they make the effort to satisfy its few special care requirements. Physical traits Commonly known as the long-tentacled plate coral or disk coral, H. actiniformis (the only member of its genus) has a disk-shaped skeleton very similar to that of its Fungia spp. cousins. However, as its common name implies, it differs in having much longer tentacles that are usually brown or green with bulbous, contrastingly colored (typically white or pink) tips, giving this coral a decidedly anemone-like appearance. It also produces long sweeper tentacles, with which it can sting neighboring cnidarians, and can inflate its tissues to surprising dimensions

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