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			#11  
			
			
			
			
			
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|   24" high tank,I have them as close to the top as I can enough so they don't suck any air. Approx 3/4 | 
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			#12  
			
			
			
			
			
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|   I think the RW20's are overkill in anything shy of 7-8 feet long. I bought two for my new 7 footer. I placed just one to test it out in my 79" long 100 gallon and on the lowest setting it blew corals right off the rocks. 
				__________________  They call it addiction for a reason... | 
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			#13  
			
			
			
			
			
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|   The higher up, the more "wave action" they produce. I usually have mine halfway down in a 24" tank. Mine is a LPS-heavy 165g (just under 6') and keeping them low gives me a nice wafting motion, as opposed to whipping the frogspawns and hammers heads right off.  | 
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			#14  
			
			
			
			
			
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|   I have 2 rx 8 on a 6 foot 135 gallon tank opposite sides and at full speed they blow all the sand all over.probably the rx15 would be more then enough for your tank. | 
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			#15  
			
			
			
			
			
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|   I would also vote for 2 x RW 15s. | 
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			#16  
			
			
			
			
			
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|   Thank you for all the input.  Looks like it's going to be the 15s | 
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