The Sera Air 550R Plus has 4 connectors and is suitable for oxygen enrichment by means of an airstone, for operating air driven filters (e.g. sera internal filters L), or air driven moveable decoration elements.
The Sera Air 275R Plus has 2 connectors and is suitable for oxygen enrichment by means of an airstone, for operating air driven filters (e.g. sera internal filters L), or air driven moveable decoration elements.
Eheim Air 1000 is an efficient, energy-saving (8.5w) aerator with 2 outlets. Has maximum flow rate of 1000 l/h.
Eheim Air 500 is an efficient, energy-saving (5w) aerator with 2 outlets. Has maximum flow rate of 540 l/h.