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Freshwater aquarium lighting is commonly provided by screw-in incandescent bulbs, fluorescent tubes and LED lamps. Incandescent lighting is becoming less popular because it uses much more energy and produces more heat than the other lighting types. [1] Compact fluorescent lighting with a compatible screw-in base is frequently used as a direct ...
In the US, this symbol is now required on all mercury-containing fluorescent lamps. [1] A "tombstone" style lamp-holder for T12 and T8 G13 bi-pin fluorescent lamps Inside the lamp end of a preheat G13 lamp. In this lamp, the filament is surrounded by an oblong metal cathode shield, which helps reduce lamp end darkening. [2]
Many times it is much cheaper per watt, especially in the long run with the multiple T-5 bulbs being replaced, to use an equivalent metal halide light setup over a T-5 setup if such high light output is required. All types of fluorescent lighting offer the same efficiency in lumens per watt; it is the shape of the bulb and reflectors that makes ...
Although they were once widely used, many reef tank aquarists have abandoned T12 and T8 fluorescent lamps due to their poor intensity, and mercury vapor due to its production of a limited light spectrum. Recent advances in lighting technology have also made available a completely new technology for aquarium lighting: light emitting diodes (LEDs ...
CFLs, like all fluorescent lamps, contain mercury [79] [80] as vapor inside the glass tubing. Most CFLs contain 3–5 mg per bulb, with the bulbs labeled "eco-friendly" containing as little as 1 mg. [ 81 ] [ 82 ] Because mercury is poisonous , even these small amounts are a concern for landfills and waste incinerators where the mercury from ...
In general, a larger-sized aquarium provides a more stable water-world and the hobbyist can also acquire a greater number of fish. A large aquarium can also enhance aesthetic value. With regards to material, an all-glass aquarium is preferable due to its reasonable cost and its superior ability to resist scratches and discoloration.
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