I'm not a berliner, but I can tell you that you should leave the lights off until you have cycled for a while. You're going to have a lot of evil in your tank for a while. Get your nitrogen cycle under control before lighting the tank (bad algae problems otherwise). Baste the rock often, siphon out anything that settles on the bottom, and keep your filter sock changed out regularly to prevent bacterial buildup in the sock. It shouldn't hurt to run the skimmer, but there are schools of thought that say it might increase your cycle time. Depending on how cured your rock is, it could take up to six weeks to cycle. If you're buying your rock by mail, it will be pretty rank. Do it all at once this way, or use a new trash can with lots of flow and aeration. I wouldn't add any livestock until you get your nitrogen completely under control. Hope this helps