Tips for Saltwater Aquariums

  Check accuracy of your hydrometer by measuring salt content of freshwater. pH and alkalinity are not the same thing. pH is a measure of the hydrogen ions concentration. Alkalinity is the measure of how much acid it takes to bring water down to a certain pH. In a reef tank you need to test your alkalinity. You cannot assume that alkalinity is OK if your pH is fine. The water that evaporates from your tank is freshwater, not saltwater. New saltwater is used to replace the water removed when you perform water changes. Use a hydrometer to monitor specific gravity. When cycling a tank, you need to monitor the ammonia and nitrite. Once...

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