If your tank smells like fish, there is something wrong. Between my two tanks, I have about 350 gallons saltwater in the fish room. There is no smell per se, but there is a seaside atmosphere. Get one of those sound machines to play the sound of surf, close your eyes, and you'll want to break out the sun tan lotion. LOL!!! On a hot humid day, I run 2 HD dehumidifiers.