So heres the pluid vs vivi nova comparision pics. Keep in mind these pics are from my iPod. The was with pluid in the tank for 2 weeks. I vaped it off and on for the first four days then it sat in my car the remainder of the time.
One thing I wanted to point out. For about a day I had the normal silica wicks in it. I then swapped to a SS wick. These pics show where. The silica wicks were. The tank is etched deeper in these spots.
The verdict: pluid will etch vivi nova tanks. No cracks were noted. The tank remained sturdy and can still be used.
Use of pluid in a vivi nova: not recommended.