Got the Aqua v2 all cleaned and built, really like the size of this tank, one of the smallest tanks I have.
The only problem I had was they already had a screw in blocking one air hole, and that bugger was in REALLY tight, but once I finally got it removed, was smooth sailing.
I have the airflow wide open, which can do lung hits with it, but I don't think it is one the airest tanks, which some may not like, but it is airy enough for my vaping style.
One real negative for me though, the holes to fill it from, are really small, and even with a thin tip bottle, couldn't get it to fill without juice leaking into the chimney, so did have to use a syringe to fill it.
Build quality is really good and was easy to build on, did my normal dual coils coming in at 0.50ohms, the flavor and vapor is awesome, really worth the money for this tank, I think this has just become my favorite tank now