Marine aquaria

image of Marine aquaria
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The marine aquarium hobby is the newest an therefore the smallest area of fish keeping. It is also one of the fastest growing and requires the highest technical skill from its participants. This chapter considers tanks, water management, captive species and maintenance.

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Figure 7.1 Modern marine aquaria with fish and invertebrates require efficient filtration systems to maintain good water quality. (© Bill Tomey.)
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Figure 7.2 A modern marine aquarium housed in a wooden cabinet that conceals a compact filtration system below the tank. (Courtesy of Aquarium Rentals.)
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Figure 7.3 A large custom-built display tank in a restaurant. Impressive systems such as this are often designed and maintained by professional companies on a contract basis. (Courtesy of Aquarium Rentals.)
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Figure 7.4 ‘Live sand’ filtration system. A layer of calcareous sand 8–10 cm thick is supported 2 cm above a confined body of water by a grid covered in a thin layer of fibre matting. A screen below the surface of the sand prevents disturbance by fish and turbulence. Strong illumination and constant aeration are essential. (Redrawn after .) Drawn by S.J. Elmhurst BA Hons (www.livingart.org.uk) and reproduced with her permission.
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Figure 7.5 (a) A trickle filter system. This is positioned beneath the tank to allow water to gravitate through the spray bar and prefilter pad. Water trickles through the medium into the sump and is then pumped back into the aquarium. (b) A ready-made trickle filter for home aquaria. (Courtesy of Class 1 Koi. © W.H. Wildgoose.) Drawn by S.J. Elmhurst BA Hons (www.livingart.org.uk) and reproduced with her permission.
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Figure 7.6 (a) A counter-current protein skimmer. Water is pumped into the unit against the flow of rising air bubbles. Organic matter binds to the surface of the bubbles to produce a foam that collects in the chamber at the top. (b) A venturi-type protein skimmer in the sump of a trickle filter, showing the reservoir (arrowed) with proteinaceous waste. (Courtesy of Aquarium Rentals. © W.H. Wildgoose.) Drawn by S.J. Elmhurst BA Hons (www.livingart.org.uk) and reproduced with her permission.
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Figure 7.7 A modern ozone generator with oxygen reduction potential (ORP) controller. The platinum redox electrode requires periodic cleaning and calibration. (Courtesy of Interpet. © W.H. Wildgoose.)
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Figure 7.8 Various commonly kept species: (a) common clownfish; (b) yellow-tailed damselfish; (c) Catalina goby; (d) Midas blenny. (Courtesy of: Manor Aquatics; Home Marine; Tetra; Class 1 Koi.)

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