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July/August 2017

Volume 6, Number 4

4 Editorial by Hans-Georg Evers
6 Aquatic Notebook by Amazonas staff

FEATURE ARTICLES
20 Gollum’s Cave — An aquascaping project by Johnny Jensen
28 Aquarium Wizard: Interview with Gerd Arndt, “Chief Gadgeteer” by Hans-Georg Evers
36 Make your own CO2 diffuser: Suitable even for non-smokers by Petra Fitz
40 Reportage: Biotope aquariums of the Rio Negro Part 2 by Michael J. Tuccinardi
50 Aquarium Plants: Creating Nature Part 2: A step-by-step implementation guide by Steve Waldron
58 Husbandry & Breeding: The Banded Bushfish — An unusual bubble nester from Central Africa by Stanislav Kislyuk
62 Reportage: Corydoras from Suriname by Hans-Georg Evers
70 Husbandry & Breeding: A Pike Cichlid for a large tank Crenicichla saxatilis by Holm Arndt
74 Husbandry & Breeding: Breeding Pterophyllum sp. “Santa Isabel” by Simon Forkel
78 Husbandry & Breeding: Geophagus mirabilis “Aripuana”— Breeding a glorious eartheater by John Lambert

DEPARTMENTS
88 Aquarium Calendar — Upcoming events by Janine Banks and Ray Lucas
90 Retail Sources
92 Species Snapshots
97 Advertiser Index
98 Underwater Eye by Morrell Devlin

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