For most of us newbies to the forum, there is a list somewhere with e-juices that crack plastic tanks. For me, I thought PMMA would be ok in my Kayfun Clone. Not so, one of my favorite e-juices (G2 Shocker) cracked my PMMA tank. This e-juice is really antagonistic towards any type of plastic. My iClear 30s, well the tank turned foggy - the plastic was freaking etched! So I'm back to using my ss steel tank on my Kayfuns when ever I use G2 e-juice. Never thought Anise would be so antagonistic toward plastic.