If you do a search, you will find an abundance of "reviews" about these lights.  
 
I bought 4, modified them so they could be controlled by an apex. Turned my Halides and T5s off and used the Evergrows for 2 to 3 weeks. Most everything did not do well. the zoas popped, but growth was stagnant. 
 
Did I use them long enough to see if my sps etc would come round; not sure, but my halides etc are now my main lights and the evergrows are accent lighting. 
		
	
		
		
		
		
		
	
		
		
	
	
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