VIVOSUN VS4000 LED Grow Light with Samsung LM301 Diodes & Brand Driver Dimmable Full Spectrum Sunlike Lights with Glasses for Seedling Veg & Bloom Plant Lamp for 4x4/5x5 Tent

The VIVOSUN VS4000 is a powerful grow light with 384 diodes, composed of 4 x 4 on the short side and 2 x 12 on the long side. It is not suitable for 240 volt cords. According to one customer review, it is perfect for a 4x4’ tent and can accommodate yields up to 14-16oz. It does produce some heat and requires adequate ventilation, with a fan suggested to help move air. The adjustable dimming feature is not prominent on some units, with one user stating it was barely noticeable. Further reviews noted excellent customer service that adheres to the 3-year warranty. It is made in China and, although deemed to be a decent light, some believe that it is overpriced compared to LED lights with similar diodes. Overall, dependent on the customer's preferences and needs, the VIVOSUN VS4000 is a powerful grow light; however, it should be noted that it can have issues with the adjustable dimming feature and may produce some heat that requires adequate ventilation.