I never bought a used tank before or had a RR tank.  I found  for sale a RR tank, sump, stand, pump and plumbing.  What questions should I ask?  How do I know when I look at it if tank is not going to explode/leak?
     He up graded his tank and took down the 90 gallon.
	
		
			
		
		
	
			
			
					
				