Tasha, I'm sorry if you felt that they were being rude and that no one has answered your question...but the fact is they can't answer either of those questions without knowing what type of wax you are using, what fragrance oil you are using, and the type of jars you are using. All those things factor into which wick size you should use to optimize your burn quality as well as burn time. Some wicks are used for heavier fragrances, while they would burn too hot for lighter ones. As for the business side, we do get a lot of people who come to the board who haven't even poured their first candle. They don't realize that it is dangerous to sell candles they haven't tested. A lot of them think that you just put a wick in come wax and viola you have a safe candle. That is why the others were pointing out how important testing is. Not that they were trying to be mean, or rude. They just want to help you have a sucessful business. I hope you continue to want to better your candles, and no there are no stupid questions. If you don't ask you won't know. Hope that helps a little. Deme