Can someone please tell me how to clean this contraption. This is my first expensive tank and I'd hate to ruin the coil because I don't know how to clean it. Thanks! 

Give everything a vodka/ grain alcohol soak overnight and let the coil assembly dry out for a while.
I tried dry burning a coil and everything had a scorched taste after that. Had to trash the coil assembly. I took it apart before throwing it away. There is a wick of sorts that wraps around the coil chamber, it was scorched and burnt. I don't think dry burning these coils is the way to go. YMMV
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I've had it for months and still haven't needed to change the coils. I have no idea what coils the trophy tanks even take though, but that coil is definitely non-cleanable at this point, I used chocolate flavored fluid and the wicks have dried dark brown :/
Umm, yeah. You definitely need to change your coils out if you have been using the same one for months.
Is it possible to rebuild Nautilus heads??
Also the part where the coil goes in - the thread - looking into it, it is a bit dark after this set of juice.....can I/ do I need to clean it if the taste is off, or is that something else?
Can I clean it with normal kitchen things?
Thanks
Oh, you know I really am fascinated by aviation. I never knew they did it all with rubber bands.
Auntie Mame
What a .....Use PURE GOOD grade of Plain "PG". That is what I use to clean parts SOMEITMES, when other fluids for one reassn or another, are not possible. I can't use alcy based fluids, as I'd end up DRINKING them. SO, I make all my own juices, so I just ried PG one dahy, since it will remove some real garbage from odd assorted components so I've found. It's the Ethyl base that PG contains. Or, Methyl, if you use PG as in "Antifreeze" (REALLY bad idea). Alchys get some weird ideas about where and what to "DRINK" sometimes.
Just soak in regular PG, PURE, cheap as all get out. I pay about 10$ a quart for Palm fruit oil based PG. The BEST if Kosher, and USDA, and done by reputable company. SImly soak in PG, then AIR it out, it will evaporate for the most part, but, Not too quickly as Pure alchohol would. Give it a couple hours, then rinse, and vape.
THIS may be the wrong place for this sort of thing BUT, On your coils you replace, SAVE the old ones, and Look for a U Tube VId. on re building the coils in a Nautilus. VERY simple. I build simple 32 gauge 7 wrap coils around 2.5mm silica, and just put ONE in. Give you the vapor and flavor of those TWO joke coils the factory builds. I've donee two, but, takes a LOT longer, and not worth the effort. But, ONE, is simple. LOOK at it, and see. I even replace the filler material. They are alwys good, always taste good, and always last longer. IF you use XC116, or ReadyXwick from ou'll get a coil that lasts for a month or more, and can be cleaned and reused. THAT is my favorite wicking material rather than silica.
The above all of it, may sound wierd and goofy, but, imagine, how the idea of electricity, or wireless phones came off when first thought up. The above, DOES WORK. Just a bit ODDLY. And, cheaply. Save money, buy better juice too, makes coils last longer.