man, sorry to post this but I was a little disappointed with the depth charge. I ordered the one that fits on standard cartos and it's pretty small. shorter than even a standard boge (carto sticks out a bit on the top) it's also a pita to refill with the depth of the caps and the capacity is very low, I'm only able to get about a mil, maybe a mil and a half into it without risking overflowing when the cap is put on. Tried filling it multiple ways and nothing seemed to be that easy.
On the positive, the build quality is impressive, it's very pretty. My personal recommendation would be to go to a slightly longer, slightly wider tank size so that the end of the carto is flush at both ends of the caps and you can get more juice in it (for the standard carto length tank) also, for the price you're charging for the standard poly carb version it really should at least come with a pre-punched carto.
Your product is nice, very nice infact but it has some fundamental flaws that negate it as an everyday tool for me, I use tanks so I don't have to fill cartos up much and with the hassle of refilling the depth charge and the limited capacity it's not worth it to use over just a carto. As an aesthetic accessory to a mod it IS very pretty and I'll probably use it when I have to be on stage since it looks neater but for function, you could keep it just as cool looking and make it a touch more user friendly and higher capacity.
When can we expect the screw fill gummy tanks?