Yes you can. I take it all apart, unscrew the atomizer and soak it in a bowl after 2-3 uses, depending on what juice I am using. Then I let the atomizers the air dry, and then toss them in my carrying case. Then just change them out each time I switch or refill juices. Its so much cheaper and they can last a while if you treat them right. I also suggest using a q-tip on the little metal nozzle on top of the nova that is connected to the atty (around it, to wipe up excess juice). You also need to suck hard after you fill it up, not connected to the battery or course (usually 2-3 good sucks) and this starts the wick to start absorbing the juice faster. Let it sit a few minutes, and then put on the battery and vape away. Also cleaning the metal part of your battery with a q tip, the little metal dot thing on the battery that connects to the underside of the nova (gently) will remove any drips or extra liquid that moved through the nova and on down while settling on the battery terminal. This can prevent good vaping if the battery post gets dirty or gunky. Do all of this, and you will have fun and your equipment will last longer. I researched all of this and through trial and error, have finally gotten stuff how I want it, lol. Good luck.
Also, when taking the nova apart, there are 4 pieces. The plastic tank, the atomizer with wick, the mouth piece that you inhale off, and the metal part that holds the atty. They can all be washed out and re-assembled. Feel free to message me if you have any more questions..........ive done a LOT of research cuz work has been slow and I am interested in this stuff.
one other thing. When vaping with the nova, spin the liquid around slowly while you puff and it really soaks the wick, which keeps it moist and you never get a dry burn, which is gross. Just gently move your vaporizer so the liquid in the tank rolls around and around. Its called spinning, and it works the best. K, I am done now, lol.