Still setting up the tank its atleast 2' deep, planning to put acro's and different kind of softies. no auto top off but if really needed will set-up one and I have a old chiller I can use for cooling. so do you  guys think 400w will be ok. 
		
	
		
		
		
		
			
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				Sean
			 
		
		
		
		
	
		
		
	
	
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