I started the SW hobby with a 3g in my office.  It is a Tom Deco Kit3.  I added a heater and a mini power head to it and I could keep 1 fish and a couple of softies. 
 
The only issue I have is the heat problem over the summer weekend, especially a l-o-n-g weekend where there is no air-conditioning in the office. 
		
	
		
		
		
		
		
	
		
		
	
	
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