Interesting stuff. Chad, when I used mine the base worked as a reflector and it was amazing how much light you got compared to if the light was on it's side. I assume a flat white box would work nicely as a reflector with some aluminum tape here and there. I imagine cost could be an issue but where I shop the 24" T5s actinics were half the price of a VHO tube. I'm still in the planning stage so I've got lots of time to look into it.  
 
Walter, that sound like a wee bit much, but please send me a PM as I'm still thinking about my 90 for long term so an electronic ballast may not be a bad thing. 
 
Thanks for the replies everyone 
 
Doug 
		
	
		
		
		
		
		
	
		
		
	
	
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