Just received my Nova Extreme today.... Question is there are two "daylight" 10,000k bulks and two 460nm actinic bulbs.. Do I supposed to leave all bulbs on 8 hrs or so daily or run daylight bulbs during the day and actinic at night?? I wasn't aware that you have to have a glass top for my tank in order to use this light... Is this true? Right now I just have pulsing xenia...
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