| 摘要 |
A filtration and circulation system for maintaining the water quality in a fish tank favorable for promoting the production and growth of fish therein and for circulating water therethrough at a rate designed to provide a high rate of water exchange in the tank. The system includes particulate, biological and activated charcoal filters serially arranged in pressurized and unpressurized sections thereof for converting or removing ammonia, waste food and excrement from the water. In addition, parallel flow paths from these filters through a protein skimmer and an ultraviolet sterilizer section, respectively, are provided for lower volume treatment of the water being circulated therethrough.
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