Backflow incense might take 30-40 seconds to start; Back-flow incense burner creates an illusion of a smokey waterfall Simply place an incense cone at the top of the waterfall and with the cone’s special properties, the smoke starts to flow in reverse direction, that is from top to bottom and in-turn creates a beautiful smokey waterfall; • Instructions: • Lit an Incense Cone and place it in its place in the burner (top right). After the cone has been lit well, an ash will form, which will push the smoke down towards the hole of the incense cone and through the small hole in the Incense Burner, creating the smoke trail that will be giving the waterfall effect. • IMPORTANT: The smoke effect can only be accomplished by using Backflow Incense Cones.