Like someone else mentioned, just because it's "only" a pear liquid, doesn't mean there isn't something in there that's cracking the tank. Nobody is saying your vendor is sneaking odd ingredients into your juice, but whatever pear flavoring your vendor buys/uses could very well have some sort of citrus ingredient or something else that cracks tanks. Often times flavorings have many ingredients, some of which might not have anything to do with the actual name of the flavor.
We been running VapeDudes Blue honey and Delightfulvapor Tucson Tea through these.
They seem fine so far. Have more coming, was going to run Pluid or Conundrum or ?
I didn't think these were suppose to have the cracking issue???
Throw some Pluid in there and you'll know for sure
What is the tank made of? It appears to be regular old Polycarbonate, in which case you still have to watch out for some flavors. If it was made of typical juice resistant plastic (I think it's Polypropylene isn't it?) it wouldn't be perfectly clear, it would have a frosted appearance to it.
PET is clear just like Polycarbonate, and I don't believe reacts with any juice, but AFAIK it's never been claimed that the Iclear 30 is made of PET. I still don't get why manufacturers don't use PET, it's crystal clear, isn't brittle like polycarbonate tank tubes, and won't react with juice.