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jeff kurtz
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5 Good Reasons to Spend Time Observing Your Saltwater Fish

With today’s chaotic schedules, it’s the norm for many marine aquarium hobbyists to see their fish only in passing (e.g., catching a fleeting glimpse when tossing in some food just before heading off to work) or when performing routine maintenance…

Protect Your Marine Livestock from the Perils of Powerheads

We marine aquarium hobbyists generally strive to create aquatic environments that are as naturalistic as possible for the animals in our care. We use high-quality salt mixes to replicate natural sea water (assuming we don’t collect salt water directly from…

Purple Firefish: A Shy Beauty for the Small, Peaceful Aquarium

Marine aquarists looking for a gorgeous, interesting, nano-friendly fish might entertain the idea of keeping the purple firefish (a.k.a. the purple dartfish, elegant firefish/dartfish, and decorated firefish/dartfish, among various other common names). Given appropriate tankmates and care, this graceful, hardy,…

Why You Should Never, Ever Release Marine Aquarium Livestock into the Wild

In a perfect world, every fish, invertebrate, or alga introduced to a marine aquarium would be allowed to live out its entire lifespan there. But as we all know, there are many contingencies that can make it necessary for hobbyists…

6 Reasons for Poor Protein Skimmer Foam Production

A properly sized protein skimmer is key to the success of any marine aquarium system—provided it’s actually doing the job it’s intended to do, that is. Sometimes protein skimmers just keep right on skimming with little or no foam and…

A. nigropunctatus: The Pet-Like Dogface Puffer

Hobbyists with sizeable tanks who are looking for a truly pet-like fish won’t be disappointed in the aptly named dogface puffer (Arothron nigropunctatus). Looking rather like a pudgy beagle with fins instead of paws, A. nigropunctatus is loaded with piscine…

The Challenges of Collecting Natural Sea Water for Your Marine Aquarium

Given the ready availability—and relative affordability—of high-quality synthetic sea salt mixes, it’s not surprising that the vast majority of marine aquarium hobbyists today choose to use artificial sea water rather than collect the natural stuff from the ocean for their…

The Sally Lightfoot Crab: A Real Character of a Crustacean

Sharing the surname of a famous Canadian folk singer, of whom I’ve been an ardent fan for many, many years (once again confirming that my profound nerdiness knows no bounds), the Sally Lightfoot crab, a.k.a. the nimble spray crab, of…

How Long Can Marine Fish Go Without Food?

This question usually arises when a marine aquarium hobbyist is either preparing to depart for vacation or trying to coax a hunger-striking new fish to eat. While it would be extremely helpful if there were a simple formula to help…

Come Out, Come Out, Wherever You Are! 5 Reasons Marine Fish Go Into Hiding

You’ve spent the long dollar on a gorgeous marine fish with the hopes that it will bring new life and interest to your tank, but then it refuses to reveal itself for more than a passing glimpse. What could be…