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Mark van der Wal
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Mediterranean Seagrass patch designated oldest living organism

Posidonia oceanica is a seagrass that occurs both in the Mediterranean Sea and off Australia. Like all seagrasses, Posidonia oceanica can reproduce asexually and sexually. Australian scientists have sequenced the DNA of Posidonia oceanica over 40 patches in the Mediterranean, ranging 3500…

Change is good, a summation of a transition from metal halide to LED lighting

After reviewing the Mazarra LED light on a 180-gallon and the AI Nano LED on a 34-gallon, I’ve been getting a lot of emails about whether I’m happy with the transition overall. There are a lot of aquarist on the…

Chaetodontoplus niger shows up on youtube

One of the rarest of all marine angelfish, Chaetodontoplus niger, was filmed by Japanese divers off of Kashiwajima, Kochi at 33-meters, and posted on youtube. The contrast of white and yellow fins along an all black body is quite stunning on…

Marine planted aquarium are compellingly beautiful too

In my humble opinion, the diversity in marine aquarium types is at an all-time high. I’ve always been turned on by the idea of biotope aquariums. The freshwater folks have certainly embraced aquarium themes,  even beyond the biotope or species…

Maxspect Mazarra P, the Full Review

I recently shared the unboxing of Maxspect’s latest LED offering, the Mazarra P series. Well here’s the review. I’ve recently replaced the metal halide/T5 fixture over my 180 -gallon with the Mazarra modules. The minimum number of modules for a…

Fish ideas for the uninspired nano reef keeper

With the increasing variety of AIO Nano-Reefs available today and their affordability, it’s not surprising how common these little reef units are. Not too long ago, stumbling onto a tiny 10-gallon mini-reef was somewhat rare and intriguing.  It used to…

Maxspect Mazarra P-Series Unboxing & Impressions

The Mazarra P Series LED light by MaxSpect showed up on my doorstep today, and I wanted to share the unboxing experience. Everything was efficiently packaged, and included plenty of extras, including 3 different optics. The finish on these P-series modules…

AI Nano LED review: good things can exist in small packages

I recently updated the lighting on my low tech reef tank with an AI Nano LED which is a world apart from the conventional lighting I had been using. I had some disdain for the included 150-watt “disco-ball” metal halide…

Pure Reef in Alpharetta, Georgia is a well executed aquarium store

Atlanta has seen its share of local fish stores – some have succeeded, and many have failed. One veteran LFS owner in the Atlanta area is Jorge Medina who is credited with the creation of three well-known reef stores prior…

Simple, low tech reef tanks can be bliss

My home office is down in the basement of our house. There are weeks where my job has me working late nights down there and at some point, I figured a little aquatic life would make my work environment more…