Original sentence: In regions where the ambient temperature is less than the desired temperature of the aquarium this generally necessitates the use of aquarium heater.In some areas ambient temperature is greater than the desired temperature and refridgeration devices, known as chillers are used to cool aquarium water.Marine aquarium temperatures should mimic the natural environment of the inhabitants and are most commonly maintained at 24-28 degrees Celcius (75-82 ºF).Most marine aquarium inhabitants are endemic to tropical reefs and waters in Africa, Southeast Asia, and the Red Sea
Edited sentence: A temperature of 75 degrees Fahrenheit to 82 degrees Fahrenheit (24 °C to 28 °C) is the most common, reflecting the environment of the organisms.Cold water marine fishkeeping is generally only regional, and most cold water fish are caught locally.Most fishkeeping is tropical, and most fish gathered are caught in Africa, Southeast Asia, and the Red Sea.This generally necessitates the use of a heater, almost always fully submersible, though reef tanks with very powerful (and therefore hot) lights can actually require cooling in some locations.This is because the physical appearance of cold water fish is not as attractive or colorful as that of their warmer-water counterparts