The Cosmorrow 40W Ultraviolet (UV) LED bar by Secret Jardin is a precision-crafted lighting supplement designed to enhance plant health and development in compact grow environments. It emits a mix of 33 % near-UV light (365 nm) and 66 % cool white light (6500 K), a spectral combination that stimulates the plant’s natural immune responses, supports mold resistance, and encourages tighter internodal growth. Built for endurance and challenging conditions, it is IP65-rated for dust and water resistance, boasting a rugged construction that uses thermal-conductive, water-sealed materials and over-molding for durability and efficient heat dispersion. The Secret Jardin Bulb HPS250W grow lights are highly effective, but if you want to dip your toes into other devices, then check out their HPLED 200W Full Spectrum or even the Bulb HP400W.
