I've heard that e-liquids like cinnablaze are pretty hard on tanks, but are there any others that are almost as bad? I don't necessarily care if it's hard on cartos, but I've read about juices actually cracking a person's tank after a while, things of that nature.
So far I've been sticking to flavors like coffee, vanilla, chocolate, butterscoth, cappachino, hazelnut, and a couple of others, but I'm interested in trying different fruit e-liquids. In particular, blueberry and watermelon, maybe some wildberry, or something along those lines. Is there anything in particular I should know about these in advance? Anything negative, I mean? It seems that some of them may have higher acidic properties...?