Thank you for all the quick reponses. I truly appreciate it. 
I have had this tank for a yr- i have two actually. I'm upgrading my 10IM light from the skyye light to a par38 full spectrum.  
Its my 15g thats the real PITA  for led lighting. 
 
I did do a search but very hard to find newer opinions, most was from the first generation lights which have now been upgraded.  
 
I love t5's. I ran my 55g with t5ho's and honestly had not a single issue with growth or colouration. The issue is the hydro costs and bulb replacement costs...or i would go back to t5's. 
Metal halides are beautiful but I simply will never go this route due to heat issues and energy efficiency. 
 
I currently run my tank with a cheap par38. I have had growth with this light.  
My issue with this particular bulb is its only 60 degree lenses and 10,000k. I have dark spots and its too white to get pop from the corals. Other than that, i highly recommend par38's for nano tanks. 
 
I do have a budget-theres the issue. 
 
Options are limited with budget and length of my tank 24". 
 
I wanted the ai prime but the spread is questionable 18x18- some say it will be fine others say I will have dark spots. 
Theres the evergrow- some say its great other advise no chinese boxes.  
Coral compulsion par38- the 35 watt has a spread of 24x24 and full spectrum dimmable. The issue is its in the US therefore add the hst and 7% duties! 
 
I currently have zoas, leather, xenia, lps. If I add anymore to my tank I would add a stylophora to the highest point in my tank, possibly more zoas. 
		
	
		
		
		
		
		
	
		
			
			
			
			
				 
			
			
			
			
			
			
				
			
			
		 
		
	
	
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