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Water Parameters

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Water Conditions

This chart includes water conditions for both Reef and FOWLR (Fish Only With Live Rock) systems. These are guidelines for fish typically found in these types of aquariums. Some species have very specific needs, so please be aware of these and make the necessary adjustments.

We offer a variety of Test Kits, as well as Supplies and Additives, that can help you maintain proper water parameters. Note: the abbreviation (ppm) stands for Parts Per Millionth.

(Fish Only With Live Rock)
Temperature 72 - 78° F 72 - 78° F
pH 8.1 - 8.4 8.1 - 8.4
Alkalinity 8 - 12 dkH 8 - 12 dkH
Specific Gravity 1.023 - 1.025 1.020 - 1.022
Ammonia (NH3) 0 parts per million (ppm) 0 parts per million (ppm)
Nitrite (NO2) 0 ppm 0 ppm
Nitrate (NO3) less than 10 ppm less than 30 ppm
Phosphate (PO4) 0 ppm less than 1 ppm
Calcium 400 - 450 ppm 350 - 450 ppm
Magnesium 1250 - 1350 ppm 1150 - 1350 ppm
Iodine .06 - .1 ppm .04 - .1 ppm
Strontium 10 - 15 ppm 4 - 10 ppm
Water Flow 15 - 20 times per hour 10 - 20 times per hour
Live Rock 1 - 1.5 lbs. per gallon 1 - 1.5 lbs. per gallon

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