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Change Polluted Water. Do Not Change Healthy Water.

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Fishkeeping Tips - How To Perform A Water Change On An Aquarium

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Aquarium Water Change - Sand Vac and Full Tank Cleaning (80% Water Change)

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No CO2, No Fertz, No Filter, No Water Change

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What do Goldfish think during a water change?

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Why No Filter, No Water Change Aquariums Are NOT For Everyone

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The EASIEST WAY to change water on a fish tank

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