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In the United States, as of 1996, aquarium keeping is the second-most popular hobby after . In 1999, an estimated 9.6 million US households owned an aquarium. Figures from the 2005/2006 APPMA National Pet Owners Survey report that Americans own approximately 139 million freshwater fish and 9.6 million saltwater fish. Estimates of the numbers of fish kept in aquaria in Germany suggest at least 36 million. The hobby has the strongest following in Europe, Asia, and North America. In the United States, 40% of aquarists maintain two or more tanks.[]

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For planted freshwater aquariums, it is also important to maintain a balance between the duration and quality of light, the amount of plants, CO2 and nutrients. For a given amount of light, if there is insufficient number of plants or insufficient CO2 to support the growth of those plants, so as to consume all the nutrients in the tank, the result would be algae growth. While there are fishes and invertebrates that could be introduced in the tank to clean up this algae, the ideal solution would be to find the optimal balance between the above-mentioned factors. Supplemental CO2 can be provided, whose quantity has to be carefully regulated, as too much CO2 may harm the fishes,

Aquarium Inspiration : 70 Pictures of Decorative Fish Tanks

Mar 27, 2016 - Download this Image Of Tropical Aquarium Fish Tank Of Malawi Cichlids School photo now Your home aquarium can be photographed in much the same manner as we just discussed. The biggest additional issue you will face will be the background. You will need to provide an appropriate background for your fish images. Try a sheet of poster board positioned on the far side of the tank. Place it outside the tank. The reason for this is simple. Pictures of your goldfish look weird when it appears to be swimming next to your couch. A simple sheet of poster board or Foamcore will give you a nice clean background that will make your little Nemo the center of attention.

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In 1832, , a pioneering French marine biologist, became the first person to create aquaria for experimenting with aquatic organisms. In 1836, soon after his invention of the , Dr. proposed to use his tanks for tropical animals. In 1841 he did so, though only with aquatic plants and toy fish. However, he soon housed real animals. In 1838, noted owning a , though he did not use the term. In 1846, maintained and for almost three years, and was credited as the creator of the first balanced marine aquarium in London. English chemist experimented with a 13-gallon container, which contained goldfish, , and , creating one of the first stable aquaria. The aquarium principle was fully developed by Warington, explaining that plants added to water in a container would give off enough oxygen to support animals, so long as their numbers do not grow too large. He published his findings in 1850 in the .

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