With a bypass from the aquarium main pump or with a small extra pump the feed water arrives the system at the inspection glass (top, right). Optional a flow meter is possible. The reactor pump circulates the water from CO2 tube to calcite tube.
At the bottom of the CO2 tube (right) carbon dioxid reaches the system - the rising bubbles are clearly visibl (bubble counter). In the CO2 tube the small bubbles form a big bubble, so the circulating water trickles down the trickling filter material. This maximum contact area enriches a lot carbonic acid. This acid water (low pH) dissolves the lime material in the calcite tube and produces soluble chalk (calcium ions and carbonate hardness / alkalinity) for corals and other lime-dependent animals.
The water that flows out of the internal circuit (CO2 pipe - calcite pipe) is then led to the neutralization (middle), where the excess carbon dioxide is removed with air. The water-gas mixture is divided in the sediment stage into hardened water, which flows back into the aquarium or filter tank, and exhaust gas, which escapes above the sediment chamber. Accumulated sediments are collected in the lamella separator and can be easily and quickly removed from the system.
After each production time (with timer operation) the system is de-aerated to prevent declining of the efficiency.