Okay, I feel like an idiot but what does the package on the tanks look like? I know where everything from my last order is except two of the tanks. If I know what they'll look like, it will be easier to search.
Speaking of which, I think I really like the tanks. I used a small one and sailed through a 5ml bottle of Banana Taffy. Good taste, good draw, no leaks. Then I made the mistake of filling it up with another vendor's liquid which promptly clogged the whole system. I tried enlarging the hole, thinning the liquid, etc. but the carto hated the stuff. I finally gave up and opened a new carto for Butternilla (yum) and it's happy again. (Washed the carto and letting it dry. I'll see if it can be rehabilitated.) I still prefer the flavor of dripping over cartos but these have much less flavor of their own than regular cartos do and the convenience is unmatched.
And if, in my next order, I forget to buy a couple more adaptors, feel free to hit me upside my head. I couldn't find yours for a couple of minutes so I tried using one of the loooong one I have. It makes the whole setup top-heavy. My MBM stands on it's end perfectly with the short adaptor but keeps falling over with the long one.
The tanks are packed "loose"... they only come in packaging if you get 5 of them. Otherwise, I put the tank in a ziploc, then put that into a rolled bubble-bag.

I have not put it down all night!


...Ouch!