The length of time to keep your lights will depend on the type of aquarium you have running. For a freshwater tank with just fish there really is no set time. Anywhere from 1-12 hours per day will be fine. If the tank is in an area where it gets lots of indirect sunlight or simply is a bright room you can keep the lights on for less time. If it is a very dark room you can keep the lights on longer. This will also hold true for a fish only saltwater tank.
City of Progress. Lawrenceville. On behalf of the City of Lawrenceville and the good people of Lawrence County Illinois, Welcome to the City of Lawrenceville Website. Lawrence County is in the heart of a ten-state region and central to most of the major metropolitan areas of the midwest.
County History. Source: Historical Encyclopedia of Illinois, Â©1901. LAWRENCE COUNTY - one of the eastern counties in the southern tier, originally a part of Edwards, but separated from the latter in 1821, and named for Commodore Lawrence. In 1900 its area was 360 square miles, and its population, 16,523.