Billow v2 not bad at all. But dual coil really juice guzzler and battery sucker.

I'm building 0.4ohm firing at 42 watts.
Flavour and vapor wise very good but it suck juice so fast.

Gonna start brewing my own juice also.

Also the wicking part, less cotton is best. Don't put too much else you'll getting dry hit after few puff.

Not at all. I never get leakage of this tank. Dry hit yes when you put a little bit more cotton.
Wicking part is the most crucial with this tank. Trial and error will help you learn.

Guys I have a question.

Accidentally build my coil at 2.5mm id instead of 2mm Id on billow v2

It does have cooler vape but it does restrict the air flow.

My question is does it suck more juice compare to 2mm id? I notice my juice level drop quite fast after a few hit compare to 2mm id.

Anyone have this experience ?

Air flow isn't a concern vape still pretty tasty. Juice consumption is my concern. Been burning my wallet for juice and I'm too busy this few weeks to pick up brewing ;(.

On side note. The cotton I wick seems about the same I out on 2mm id tho.

Anymore opinion? Else I'll go back to 2mm id. You can call me lazy but I'm so tired I'm reluctant to rebuild after a long day.