Marine Aquarium Water Quality Parameters

September 4, 2008 · Filed Under Aquarium Water Chemistry · 3 Comments 

Marine environments are extremely stable, particularly where corals live. Significant deviations outside the range given for any of the parameters may lead to problems in the aquarium.

  • Temperature: 74 to 82F (23-28 C)
  • Salinity 34-36 ppt (1.0250-1.0270)
  • pH 8.15-8.6 (optimum 8.2-8.3)
  • Alkalinity 2.0-5.0 meq/L (6-15 dKH)
  • Ammonia (NH3)-zero
  • Nitrite (NO-2)-zero
  • Nitrate (NO-3)-<20 mg/L (as nitrate ion)
  • Nitrate (NO-3)-<4.55mg/L (as nitrate-nitrogen)
  • Phosphate (PO³)-<0.05mg/L
  • Calcium (Ca²+) - 375-475mg/L
  • Dissolved Oxygen (O2)->6.90mg/L

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