GreenSure 750 Hydroponic Air Pump CENTRAL GARDEN BIRD Down To Earth™ Calcium is

Down To Earth™ Calcium is an essential nutrient that plays many important roles in plant growth

improving fertilizer use and reducing water use over the gardening season

MEASURES: 13

aluminum top and bottom

Match the pre-filter to your Black OpsNutrients Carbon Filter size

GreenSure 750 Hydroponic Air Pump CENTRAL GARDEN BIRD Down To Earth™ Calcium isThe universal All in One Hydroponic and Aquaponic Air Pump is also suitable for aquariums & water gardens. This pump is economical with reliable high performance air flow and pressures to run multiple air stones (not included) to create powerful water oxygenation. Why use an air pump for oxygenation? Air pumps powering air stones produce a stream of bubbles. These bubbles increase the level of dissolved oxygen in the water through diffusion, creating