15W solar powered oxygen pump for fish tanks and garden ponds. Harnesses sunlight to oxygenate water with no electricity costs. Three operational modes for flexible aeration , resistance, and intermittent modes Includes two air stones Delivers adjustable air flow to fit different aquatic setups Builtin battery backup for continuous performance Integrated lithium battery enables nighttime operation Keeps water well oxygenated when the sun is not shining Optimized sunlight exposure for outdoor use Adjustable solar panel allows placement for maximum sun capture Suitable for outdoor settings such as bird baths and decorative ponds Key attributes Function: solar powered oxygenation for water bodies Compatibility: fish tanks and garden ponds Power: 15W Modes: , resistance, intermittent Air supply: two air stones Battery: builtin lithium Panel: adjustable for sunlight Performance: reliable daytime aeration with nighttime backup Use scenarios Outdoor pond in full sun: position panel to maximize sun capture and maintain continuous oxygenation during the day Bird bath or decorative pond: adjustable panel setup provides steady aeration for small to medium water volumes Nighttime operation: builtin battery backup keeps the water oxygenated after sunset, supporting a healthy environment