There is no real need for lighting during the cycling process, however, it would not hurt to turn it on for approximately 6-8 hours (may need a timer for that). Tempurature should be same as usual 78-80 degrees. Nitrates will take some time, possibly 3-4 weeks - depending upon how you are cycling your tank (with or without fish) and whether you have inserted some rock or media from another saltwater tank to seed that tank and get it started or if your using ammonia in a bottle. You will start off with amonia and spike out and the see nitrites develop and spike out and then see nitrate - which is near the final stage of cycling. You can test your water each day to see how its going.