MAGI-JET - Three-in-One series is a versatile device for cleaning and aerating water in your aquarium. Provides a complete mechanical and chemical treatment(May be added by Sera Siporax mini 35.g) of water in the aquarium. In addition, the effective aeration system with a variety of air sampling devices eliminates the need to use air compressors. To aerate the water in the tank (without the use of a sprinkler flute), the device should be placed at a depth of 1 cm. Below the water level. The chemical adsorbent - activated charcoal is in a special ink cartridge, which is a replacement element and can be easily changed during operation. Attention, in order to avoid volley emissions, carbon cartridge (or activated carbon in it) must be replaced after 2 - 3 weeks of use.(Can be replaced by Sera super carbon 29,g.sold separeately)