9 T3's i like to have every one full with a different flavor and color coded to the bottle so it is grab and go. i have a 30s that came with my MVP-2 that is a leak-o-matic, and an Aspire BDC for my Boba's. I believe in a dedicated tank for a dedicated juice or a similar...say my B&M was out of peach....strawberry would work just as well in that dedicated peach tank, but not a dark juice....get it?
top of bottle painted say green for my melon chiller, then a green band around the T3 painted, then a silicone tip with a green dot on it. no confusion at all. OCD is good sometimes!!!