50 Calcium reactor

A dissolving process takes place in the lime reactor, which can be divided into three different sub-processes.

1. Carbon dioxide is added to the feed water to form carbonic acid, which lowers the pH in the reactor to approximately 6.5 to 6.7 (high performance systems to 5.0).
2. The now acidic water dissolves the calcareous material in the reactor and produces calcium and carbonate hardness (alkalinity).
3. A neutralization stage should definitely be installed downstream to prevent the pH value in the aquarium from becoming too low. Either the effluent water runs through a lime column or it is neutralized with air (stripping).

A calcium reactor can produce large amount of dissolved lime without ionic shift. It can be automated from simple control to total calcium and KH monitored system.