I'm with you, Woofer. Holman, everybody is different. I have a CE3, yeah a cig-a-like bottom feed mini tank, that has had the same rayon wick in it since I first wicked anything with rayon. That's got to be at least four or five months, or longer. I'm still using the Foggers I bought about the same time. And, I'm using them all with the same liquids and mods that I've had for quite a while now, some of them for two years or more. If it works for me, I tend to stick with it. I will admit to working on some DNA40 mods, but plan on using the same tanks on them that I'm using now. If it ain't broke, don't fix it!