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Corals consume and hence deplete the Calcium level in our aquariums. If allowed to drop without some form of addition our corals will begin to lose color and growth. We need to maintain Ca at 400-450 ppm. Test often with a good test kit. Liquid calcium is typically added with a dosing pump; although manual additions are effective. Remember once target levels are attained, Ca and Kh (alkalinity) need to be added in equal parts for daily maintenance.
Quick guide: In order to increase Ca 10 ppm (400-410) in 100 gallons of aquarium water, we need to add 100 ml or 3.4 fl oz of liquid solution.
Mixing instructions: Fill a gallon jug half to three quarters full with Rodi water, then add the content of our package. Shake aggressively! Let rest overnight. Do not pour powder into jug before the water as this may cause clumping. If clumping occurs run hot water over jug in sink, as heat will help it dissolve easier.