My candles are 8 oz. They are made with soy wax and have cotton wicks. The burn time is 45-50 hours. After the candle becomes liquid across, you can blow it out and it still puts off fragrance. After it sets up you can relight it. With the soy wax and cotton wicks, there should not be any black smoke from the candle. After the first burn time, keep the wick trimmed to 1/4 inch.
I have pictured 3 different candle fragrances, but I have more that I can pour, if you like something different.