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.
Lawrence County. ILGenWeb. My name is Mary Kathryn Kozy, and I'm the County Coordinator for Lawrence County. I want to thank Allison Mushrush, Celia Tomlin, and Laurel Treat for the work they have done on the site in past years. This site is part of the Illinois GenWeb Project which is a part of the USGenWeb Project.