Ah. wattage.
Watts is kind of like volts, kind of like wattage setting the volts for you, and volts kind of being like a manual mode.
Now the range of these kind of goes by your ohms. I have a 2.2 and a 2.4 ohm coil in my tanks. The 2.2 is slowly getting gunked and I normally use VV instead of VW and I have that cranked to 5 volts.
Back to you. The higher your VG in your juice, the harder it will be to wick.
Top fed stands will run lower wattage and voltage as the wicking takes longer. As in the juice takes longer to get to the coil. Bottom fed you can primer your wicks kind of by plugging one airflow hole and taking a light puff as not to flood it.
If you wait the top fed CAN run higher wattage, because the wick is completely saturated and won't burn.
Sometimes, it's about the juice, I use higher VG in tanks like I'm not supposed to and have to prime my wicks after a few puffs.
Also remember there is a point to how high you want to go, sometimes it's about experimenting with the coil, like I said, my 2.2 ohm coil can handle 5 volts and still not burn anymore.
Experiment a bit and remember sometimes its patience for the juice or wicking, others you might just have the watts set way too high for the coil.
Hope I helped a bit friend! And Welcome to ECF.