I’m leaking all over the place! What is a good tank?

I have a Tesla mod and want a good tank to go on top. Currently using a Wotofo Serpent Mini. But I get leaks all over the place. I think it come out the air vents. Perhaps I'm not using it correctly.

Seriously, the air vents should be on top and there should be no way to leak fluid unless you turn it upside down and pour it out!

So, what is a good tank I can use?
It must be for dummies like me, have rebuildable coils, and bullet proof.
Any suggestions?