I have always used cartos, and Boge was the best around, until I started having more and more problems with
consistent performance. I moved on to DC cartos when they came out, and things were good for a while.
Then I started noticing flavor problems. One carto would taste fine and last a couple weeks before dropping
off, and then the next would only last a few days before flavor and performance would drop off. It seems the
"hand made" factor is the problem, and as production has ramped up to meet our needs, it has only gotten
worse. I guess the bottom line is, cartos are great, but they are not 100% effective. Any vaping setup will
require some kind of fiddling to get consistent performance.
After fiddling with tanks for a while, I noticed the following things.
- A combination of surface tension ( at the holes ) and a slight vacuum in the tank ( air can only get in
through the holes that fluid is trying to get out ), is what keeps the tank from just draining out through the
holes. Hence the need for a couple of hard pulls periodically to allow more juice into carto. I have noticed that
a quick hard pull with a quick release ( kind of like smacking your lips ) works better than just a long hard pull.
- The top of the carto tends to stay dry, IMO if you top off the top of carto it effects how well air can get back
into the tank. I have noticed more gurgling and flooding if I top off top of carto.
- Environment can effect how well a tank works, if I am inside with a/c and I go out into 100 degree weather,
my tanks usually flood. The only way to prevent this is to put tank in my pocket upside down until juice warms
up to ambient temp and pressure equalizes in tank.
- If the filler in a carto is denser, then punching a carto compacts the filler at that point, making it harder for air
to get back into the tank. I would take a thin tool and try to work ( loosen ) the filler around the hole.
For what it's worth, here is what I have found to work pretty well ( consistently ) for me.
- A tank that is snug on the carto but not real tight. I have one tank that is very tight and I constantly
have to do dry pulls and it still vapes a little dry.
- I prefer the smoktech cartos that are factory punched over punching my own, for reason as stated above.
A lot of vendors now offer the smoketechs in single and dual coil with 1, 2, or 3 holes. The flavor may not be
"quite" as good as a Boge or others, but I can "usually" counter this with double flavor in my juices.
( I say "usually", because some flavors don't taste better when stronger )
- I use the cartos with 2 or 3 holes and then I enlarge the 2 opposing holes by using a tool with a sharp
point. I put the tool in at an angle and then rotate the tool to make the hole just a little wider. If you are
too aggressive when doing this you may raise an edge around the hole that would tear up your inner
o-ring. You can use needle nose pliers to flatten any edges.
- I am a big fan of the "slap yo mama" filling tool. It provides a tapered surface to prevent damage to
inner o-ring when sliding carto into tank. It allows you to completely fill tank versus tilting tank to use
syringe or needle nosed bottle. It allows you to replace carto without emptying tank.
- When I put in a new carto, there are a lot of bubbles at first, when these stop I do a couple dry pulls
and let the tank "soak" for about 15 minutes. When I put the tank on my PV, I do couple more pulls,
I can tell it is ready if the pull feels a little "moist" ( not to the point of gurgling ). Then I top off the
tank and I am good for a whole day of vaping.
I use a 70/30 PG/VG mix, if you use a thinner or thicker mix you will want to vary the number of holes
and whether you enlarge them or not.
The last and most important thing to consider is this, you WILL have to experiment. There are too many
variables for every setup to work the same. Different vendors sell juices that are ( well ) different. One
vendor may use flavors that are mostly alcohol based, this will make for a thinner juice even though
the PG/VG ratio will be listed as the same as another vendor. Cartos are definitely different from brand
to brand and you will get some duds. Even PV's are different. I have 2 PV's that are both essentially
the same mechanical wise, but one uses all copper contacts and therefore runs just a little "hotter"
even though they use the same battery, because it has better conductivity.
I hope this helps.