Guys, I have been running DC Cartos in my Madvpes
tank and running all VG but any vg/pg combo will work like this. This works great if you try this. Make a score on the wall of your Carto like shown in the pics but DONT go all the way threw, then take a nice sized sewing needle and twist and push till you make a small hole. this works better then the punched holes and doesnt dent the carto, I've been using this for over a week and it works super