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jeff kurtz
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Signs You May Need to Lower Your Reef Tank’s Bioload

The bioload in a reef aquarium increases through both the acquisition of new specimens as well as the growth/reproduction of established livestock. So, unless fish and corals are dying in significant numbers (which they shouldn’t be unless there’s a major…

In Praise of Fish Oil

Hobby pioneer Paul “Paul B” Baldassano has some strong opinions on what types of foods are best for fish, formed over his many decades of involvement in the marine aquarium hobby. Somewhere near the top of his list is fish…

BB Gun Dreams and Christmas Aquariums

Back in the sixth grade, I had my sights set on a BB gun for Christmas. No, it didn’t necessarily have to be the Official Red Ryder Carbine-Action, Two-Hundred-Shot Range Model Air Rifle so famously coveted by Ralphie in A…

The Hardy, Colorful, Nano-Friendly Yellow Watchman Goby

Marine aquarium hobbyists who maintain nano tanks, whether by choice or necessity, often find it challenging to acquire fish that are well suited to their diminutive systems. But in the yellow watchman goby (Cryptocentrus cinctus), they can get all the…

Some Thoughts on Reclaiming Reverse-Osmosis Waste Water

While reverse-osmosis units are among the more practical, affordable means for producing purified tap water suitable for sensitive reef systems, there’s no question that they tend to generate a lot of waste water relative to the volume of purified product.…

More Gift Ideas for the Reefkeeper in Your Life

Let’s face it, if we marine aquarists had our way, every gift we received during the holiday season would be hobby-related. Trouble is, ours is such a specialized pastime that few, if any, of our loved ones really understand it…

Reliable Marine Aquarium Reference Sources

“Research the characteristics and care requirements of any fish or invertebrate you plan to keep.” “Studying the fundamentals of saltwater aquarium keeping before setting up your first system is a hallmark of success.” We’ve dispensed advice like this time and…

4 Crabby Caveats to Keeping Clibanarius tricolor

Clibanarius tricolor, the blue-legged hermit crab, is very commonly introduced to marine aquaria, either in conspecific groups or as part of a multi-species “reef janitor” package or “cleanup crew” (aka “CUC” for those who just can’t get enough of those…

Why Isn’t Cryptocaryon irritants a Major Problem for Wild Marine Fish?

During yesterday’s Thanksgiving get-together, which my wife and I host for my side of the family every year, a teenaged nephew asked me about marine ich (Cryptocaryon irritans)—the one fish disease he’s heard something about from a friend who keeps…

How Simple Can You Get with Your Marine Aquarium?

While the title of this post puts me in mind of a song performed by Nick Rivers in the 1984 comedy film Top Secret, it’s a question many a novice has posed before setting up his or her first marine…