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A self-sustaining or balanced aquarium

A self-sustaining or balanced aquarium.png Lady and girlThumbnailsGirl choosing a good bookLady and girlThumbnailsGirl choosing a good book

three children looking at an aquarium

Any transparent vessel capable of holding water, even a Mason jar will make an aquarium from which a great deal of pleasure may be derived. The old way of maintaining aquaria in good condition required a great deal of care and attention. The water had to be changed at least once a day if running water was not available, and altogether they were so much trouble that as a rule owners soon tired of them.

Modern aquaria are totally different. By a proper combination of fish and growing plants we can almost duplicate the conditions of nature and strike a balance so that the water need never be changed except when it becomes foul or to clean the glass.

Outdoor Sports and Games
By Claude H. Miller
Published 1911
Available as a free download from gutenberg.org
Boy, Girl