I have two 4' T5 fixtures on my tank with "Blue" bulbs. It gives the nice dawn dusk look. They are sunlight supply. In theory they don't have water proof plugs/end caps and I've heard of people getting shocked easily from them, although I haven't had any problems. 
 
MH DIY Reflectors are fairly easy to make and DIY T5 reflectors can be done as well, although they are a bit harder. 
		
	
		
		
		
		
		
	
		
		
	
	
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