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2     Letter From Europe by Daniel Knop
5     Editor’s Page by James M. Lawrence
6     Letters
8     Reef News
20     Rarities: The Scarlet or Freckled Frogfish (Antennarius coccineus) by Inken Krause
26     Interview: Russell Kelley by Daniel Knop  

34     Trace Elements by Daniel Knop
40     What Are Trace Elements? by Dr. Dieter Brockmann
44     Trace Element Deficiency in the Coral-Reef Aquarium by Dr. Dieter Brockmann
50     To Dose or Not to Dose by Ret Talbot
58     Boxer Crabs — Two from one: the Boxer Crab’s secret tricks by Sylvia Weimann
72     Sustainable Aquatics  by Ret Talbot
82     Vampires of the Sea by Ronald L. Shimek, Ph.D.

95     A Domestic Dream – The aquarium of Stefan Ebert by Inken Krause

105     Species Spotlight: The Green Palm Tree Polyp by Daniel Knop
110     Reefkeeping 101: External sumps, part two: what’s best? by Daniel Knop
118     Coralexicon – Technical terms that appear in this issue
122     Advanced Aquatics: Changing tides in aquarium sustainability by J. Charles Delbeek
126     Advertiser Index
128     Reef life by Denise Nielsen Tackett and Larry P. Tackett

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