MarineDepot
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The fixtures are indeed water resistant (IP65 rating) so they do stand up well to salt spray and small splashes. No cover is needed.
Current has posted some specifications on the new Orbit Marine Pro. Do you have any additional information? I was surprised that total wattage only increased from 18 to 21 for the 18-24 inch fixture. I have a 34 gallon cube with a 55 watt circular compact florescent (also Current USA but discontinued). Will the new light be much of an upgrade? I am also considering the new AI Prime. Your input is appreciated.