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			 i find it very hard to sleep at night, with my filter running and protein skimmer on. so i turn them off at 12 and on again at 730. will this harm anything i have had no problems so far. ( one month) 9 smal fish 55 gal tank 100 pounds of rock. but i do keep the power heads on. 
		
	
		
		
		
		
		
	
		
		
	
	
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