- Jun 22, 2019
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You test to make sure that something is healthy.Just doing the common tests to make sure the aquarium is healthy.
Using a deadly substance.
The deadly substance tells you if the environment is healthy.
... Why on earth does this somehow make sense to me?
 
	 
 
		 
			
		
		
		
	
	
			
		 
 
		 
 
		
 
 
		 
 
		 
			
		
		
		
	
	
			
		 
 
		 
 
		 
   
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		