Adjustable Silent USB Aquarium Fan

Measures 13.587 cm in length and is built for minimal visual and physical footprint. Made from impact-resistant ABS plastic with balanced fan assembly for vibration-free rotation. Powered solely by 5V USB input — draws low current and generates no heat at the unit itself. Includes a rotatable, bendable mounting arm enabling secure attachment to tank edges of varying thicknesses (up to 3.5 cm), with full 180° tilt and 360° swivel for customised airflow orientation. Designed specifically for passive thermal management: increases surface water evaporation rate to lower temperature gradually and safely — avoiding sudden drops or cold spots. Works best when ambient humidity is moderate (