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.
Lawrence County, Illinois. Lawrence County is the easternmost county in the U.S. state of Illinois (excluding water boundaries). According to the 2010 census, it has a population of 16,833. Its county seat is Lawrenceville. Contents.
Westville is located on Illinois Route 1 / U.S. Route 150, about seven miles south of Interstate 74 and the county seat of Danville. Westville's coordinates are 40Â°2â²36â³N 87Â°38â²17â³W / 40.04333Â°N 87.63806Â°W / 40.04333; -87.63806 (40.043286, -87.637995).