IIRC, that's a Boge Bottom Feeder? Just get 510 atomizers from any e-cig vendor online. I really don't know who has the best prices right now because I rarely buy them anymore. It's 3.7V, so you'll want between 1.5 and 3 ohms. Probably best to get a few of them in some different resistances (ohms). 2.5ohms is probably the ideal, but you'll want to try a little lower and higher to find out what you like best. Make sure they don't have a sealed bottom (most don't). Joyetech, Boge and SLB are all decent brands. You don't need a dripping atomizer or a bridgeless atomizer or anything fancy with that unit. Everyone has their favorite brands.
You can use an atomizer until it either burns up or gets clogged and hard to draw on. Clean them if they start tasting funky or after about a week of regular use. To clean, there are a lot of different methods, mostly involving pure grain alcohol, or at least 158 proof vodka.
Soak in the alcohol for a while, maybe 30 minutes to an hour or more, depending on how gunked up they are.
Rinse and blow out the excess water through the battery end.
Soak in hot water with a denture tablet. (unflavored)
Rinse
Give a quick soak in alcohol to displace the water and blow out again.
"Dry burn" them.
After dry burning, if the white ash on the coil is very heavy, repeat the whole process. If not, just use it.
If you keep them clean, they can last for a couple weeks to a couple months.
Low resistance atomizers will burn out faster.
Dark
juice will gunk them up faster.
You can get instructions on how to dry burn them on youtube.
