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However, this metal halide lighting often uses more electricity and can produce excessive heat. Other newer sources for planted aquariums that use less electricity and produce less heat include the T2, T5, SHO, and LED. The LED aquarium light fixtures generally are the most efficient, although the T2, T5, and in particular the SHO, have their ...
The Kitty Cams are fixed on a collar that is placed on the cats, like Crittercams on land animals. The cameras are very lightweight and waterproof and can even capture activity at night through LED lights. In Athens-Clarke County, Georgia sixty cats were equipped with the cameras and monitored while roaming freely outdoors for 7–10 days.
An aquarium's physical characteristics form another aspect of aquarium design. Size, lighting conditions, density of floating and rooted plants, placement of bog-wood, creation of caves or overhangs, type of substrate, and other factors (including an aquarium's positioning within a room) can all affect the behavior and survival of tank inhabitants.
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Anomalopidae (lanterneye fishes or flashlight fishes) are a family of fish distinguished by bioluminescent organs located underneath their eyes, for which they are named. . These light organs contain luminous bacteria and can be "shut off" by the fish using either a dark lid or by being drawn into a p
Shimano estimates that their 7.4-volt battery pack can last up to 1,000 kilometres (620 mi) per charge. [14] The system also has an LED light to warn when it needs a charge. [15] The rear derailleur has shift times similar to mechanical systems and a break-away system to protect it in case of a crash. [15]