From: aggieb02@hotmail.com   
      
   I know this thread is old, but I was curious of this same question.  I have   
   two fish tanks, one 20 gallon fresh water and one 40 gallon salt water.  I add   
   about 2 gallons of fresh water to my saltwater tank every few days.  I do not   
   have to add    
   freshwater to my freshwater tank but once a month when I clean it.  The tanks   
   are pretty much side by side in the same room so they endure the same   
   temperature daily.  Why would so much water evaporate from the salt water   
   tanks.  Anywho, any feedback is    
   greatly appreciated.   
      
   Regards,   
   Chris   
      
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