Review on CHANZON 100Pcs (10 Colors X 10Pcs) 3Mm LED Diode Lights Assortment (Clear Transparent Lens) Emitting Lighting Bulb Lamp Assorted Kit Variety Colour Warm White Red Yellow Green Blue Orange UV Pink by Robert Gilbert

These UV LEDs degrade quite quickly at 3v 20mA. After 1 week most of the LEDs start shifting in color and about half of them vastly decrease in brightness after 1 month. Running these LEDs at 8mA decreases the brightness significantly but prevents them from degrading. Fortunately my application requires a large array of dim LEDs anyways so the reduced brightness is not a concern. Would only recommend if you are okay with running them at less than 10mA with reduced brightness.