I am a new hobbiest. I have a 29g Biocube, all stock options, no skimmer. 79temp, 16lbs live rock, live sand, and 1lb live rock in the back middle compartment. It's my first week of the cycling process, AND MY lfs TOLD ME TO LEAVE THE FLORSCENT LIGHT ON 24HRS, AND THE NIGHT LIGHT 2-3 HOURS A...