original German limewater method
of calcium maintenance for all
marine fish & reef aquariums

The Continuum advantage.

Reef•Basis Kalkwasser is a high quality calcium hydroxide, the original German limewater method of adding calcium, providing essential calcium for increased growth rates in corals, coraline algae, crustaceans and many other marine organisms. It contains no acetate, EDTA, gluconates, polygluconates or other unnecessary organics to pollute your aquarium.

Use in aquarium keeping.

Kalkwasser is primarily designed for maintenance and does not work rapidly, so you should first use our Reef•Basis Calcium if you have severely depleted calcium levels and need to raise them rapidly. Proper control of calcium level is imperative for the health and growth of corals and many other invertebrates. Continuum recommends that you maintain a calcium level of between 410 and 450 mg/L (ppm), an alkalinity level of 7 to 11 dKH (2.5 to 4 meq/L), and a magnesium level of 1250 to 1350 mg/L (ppm). Note: Aquarists keeping SPS corals should consider keeping alkalinity at 7 to no more than 9 dKH (2.5 to 3.21 meq/L).

Expert use.

This product is only meant for use by advanced hobbyists that are familiar with Kalkwasser. Never add powder directly to the aquarium! Dissolve 6 grams, about 2 teaspoons of product in 1 gallon of purified water to make a saturated solution. Stir vigorously, let stand for several hours. A white precipitate will form on the bottom of the container, and a crust may form on the top of the solution, this is normal. Decant the clear liquid into a dosing system and drip slowly over several days. Discard precipitate. Each gallon of Kalkwasser solution will raise the calcium level about 48 ppm in a 20 gallon (80 L) aquarium. Test the calcium level with a good quality test kit and adjust the addition rate as necessary to maintain the desired level.

Caution: Keep out of reach of children. Not for human consumption. Contains strongly alkaline calcium hydroxide, if ingested drink plenty of water or acidic fruit juice, consult your medical practitioner or a poison control center. If in eyes flush with water for 15 minutes, consult your medical practitioner. If on skin flush with water.