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5. Equ1pment Part II -
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A1rSupphes, F11tratmn, Llghtmg
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and Electncal Installaüon
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AIR SUPPLIES
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Air injected into aquatic environments has three basic functions:
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(a) to provide oxygen, remove carbon dioxide and break down toxic
wastes-by its contact with the water; (b) to provide motive power
for the circulation of water by air-lift mechanisms; and (c) to induce
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water movement and general turbulence. Ascending air streams also
provide an attractive and decorative feature. A“ typical installation is
shown in Figure 19.
Diaphragm pump suspended from hook
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Mains supply
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T-pieces
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Clamp/regulator
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{
Diffuserstone
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Air—litts
“Fig. 19. A typical
system. The diaphragm pump should be positioned
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at least 6”_ above the water surface. All piping should be kept as Short as possible
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to encourage the
of a back pressure \
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