Nilsen Reactors for the Marine Aquarist
One of the most important aspects of reef keeping is stability.
Maintaining acceptable levels of calcium and alkalinity is vital for
coral and clams growth and health. If you are tired of mixing kalkwasser (limewater) or dosing two part additives, simplify your
husbandry by using one of our reactors.
calcium reactor essentially consists of a chamber full of
calcium carbonate. The reactor slowly pulls water from the aquarium into the reaction chamber and recirculates
it through the chamber several times per minute.
Meanwhile, carbon dioxide (CO2) is pumped into the chamber; the
CO2 lowers pH to a slightly acidic level. This enables the
water to rapidly dissolve the calcium carbonate and release the
calcium and alkalinity buffers. This calcium rich, buffered
water is then dripped back into the aquarium.
For lightly loaded systems, dosing kalk (lime) can be all it takes to
maintain calcium and alkalinity levels. Kalk (which comes in a powder form) is calcium hydroxide. The powder
loaded in the reactor where it is mixed with freshwater and dissolved thoroughly
by a mixing pump. The resulting solution (the bottom gathers precipitated powder) is dripped slowly into the aquarium to avoid
a spike in pH. Most aquarists who use kalkwasser use it to replace all evaporated water. Kalkwasser is a balanced