Active Aqua Air Pumps Active Aqua Air Pumps for aquaponics and hydroponics are ideal for oxygenating reservoirs of all sizes. Oxygenation of hydroponic reservoirs using air pumps is vital for the health of plants and their root systems. Active Aqua Air Pumps introduce dissolved oxygen to the nutrient solution, keeping it well-aerated for each irrigation cycle. * Super silent with multi-level muffler * Special synthetic rubber diaphragm provides consistent airflow output, which can be easily adjusted with the pressure dial * Low power consumption * Adjustable air flow Active Aqua Air Pumps will supercharge your roots with oxygen Adjustable air flow Using the air flow dial on the top of the pump, dial in just the right pressure for your situation. Silent yet powerful These air pumps are designed to be extremely quiet, which we achieve using a multi-level internal muffler. Four sizes available Available in four sizes so you can choose the right one for your grow project: 3.2 L/min, 7.8 L/min, 15 L/min, and 25 L/min. Sizes Available: * AAPA3.2L | 3.2 L/min | 1 Outlet * AAPA7.8L | 7.8 L/min | 2 Outlets * AAPA15L | 15 L/min | 4 Outlets * AAPA25L | 25 L/min | 8 Outlet