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.
Sponsored Topics. Centreville is a city in St. Clair County, Illinois, United States of America. The population was 5,951 at the 2000 census. Centreville is located at 38Â°35â²4â³N 90Â°6â²14â³W / 38.58444Â°N 90.10389Â°W / 38.58444; -90.10389 (38.584583, -90.103768).