This is a tank that everyone should get at least 1 of, it is by far the best tank I have, bottom glass o-ring was stuck on and I damaged it taking it off but 2 spare O-rings in the kit so all good.
I have only used the RBA head in this and it is perfect 0.8ohm 30w chu chu chucks the clouds, waiting on my dual RBA head coming, top fill, spares, quad coil, tri coil. this tank sets a new standard, all other tanks will be judged against this one from now on