Valuable zooplankton and small crustaceans such as copepods can multiply in the reactor like in a refuge. These are suitable as a natural source of food for fish.
The algae reactors of the individual manufacturers such as Grotech, Pax Bellum, Pacific Sun (Pro S/M/L) or TUNZE differ in their flow rate, light output and size. With some manufacturers the pump is included directly, with other devices the pump has to be purchased separately. The respective flow rate and size of the algae reactor must be matched to the tank volume.