Balanced Aquarium. Two children, Susan and Fred, put together an aquarium in their home. Fortunately, they have the Encyclopedia Brittanica narrator to tell them exactly what to do in detail. This is a charming children’s educational film, and if you’re wondering how to put an aquarium together, well, this is your film. Ratings: Camp/Humor Value: **. Weirdness: ** Historical Interest: ***. Overall Rating: ***.