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			 Cut back your photoperiod, take out the caulerpa, borrow or buy a UV sterilizer, run a phosphate sponge in a canister filter, and some carbon and floss.  Skim hard.  And call Jayson at SWC for some clams.    
		
	
		
		
		
		
			You likely have had phosphates building up, and now they've caused this. I had green water like yours in a 90g for almost two months, but it cleared up when I took the steps listed above. Chin up; you'll see your LR again! (PS- watch your fish for signs of stress. My tang suffered, clownfish did not.) 
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	---------------------- Alan  |