Tuna Candy:
BTW - what is your definition of tuna candy?
Have you tried the LP dual cyalume glowsticks that clip onto thicker mono? I can't say that I have seen glowing material oozing from these. But mostly I use the LP electrolumes for all depths. And the single cyalumes are good for the balloons. Usa an electrolume for your deeper drops if you have problems.
I have used (on occasion) the cyalume sticks that are in the foil wrappers and they seem to leak after subjected to depth like you say.
Do you know what swordfish candy is?