I would think the device and PG/VG Ratio wound be a factor in percentage. If I was using a Genesis 70/30 PG/VG I would lower the Rum to 0.5%
I use the kanger T3 with a variable v battery but also use regular ego batteries when I'm on the go. I usually vape 75/25 18mg. Also the rum I'm using is TFA and not the VZ SC that you are using. But I think maybe starting at .5 is a good idea.
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