my rta's I rewick every fourth tank, my rda's I kind of go by eye.. I use 316L and TC so I can vape the wicks dry on my drippers, that tends to prolong the life of them.. in my personal experience anyway
Um, make sure you pull the cotton out before you dry burn !!!I change my cotton every couple days. Just do a visual inspection, if the cotton looks rough and the coils are gunky, dry burn (don't dry burn if you are using Ni200) and change your cotton. Also, go by taste, if its funky then change it out.
Also if you're using Ti 1, don't dry fire the coil past it turning just slightly blue. If you fire it red hot, it's unsafe to vape with.I change my cotton every couple days. Just do a visual inspection, if the cotton looks rough and the coils are gunky, dry burn (don't dry burn if you are using Ni200) and change your cotton. Also, go by taste, if its funky then change it out.
Um, make sure you pull the cotton out before you dry burn !!!