The problem with a cover is you have to clean it all the time. 
 
I had an acrylic cover on mine, but I removed it. 
 
now, I just give the bulbs a quick wipe every month or so. very little salt creep on mine - maybe because I have a fan in the hood running all the time? 
		
	
		
		
		
		
		
	
		
		
	
	
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