I, too, recently started vaping and using emows. I, too, am impressed with them while quickly coming down with the hobby bug.
That's the bug creeping up behind you to chew on your wallet while that "only scratching the surface" impression sends you all innocent-like to the internet to find out more. One of his brothers has already gnawed several holes in mine!
If you're interested in trying out cotton wicks and/or rebuilding the cores in the emow I really recommend checking out
clonecores. He sells "clone" cores with dual coils that fit nicely in all my standard and mega-size emows. But you can take these apart and change the wicks or even rebuild the coils if you want. I saw lots of stuff online about how folks do that with the old style name brand coils, but the new ones that came with my emows can't be reliably disassembled for rebuilding
(at least not with just my hands and some tweezers.) I was all set to be heartbroken over the limited functionality of my lovely emow, thinking it wouldn't let me try a cotton wick. I figured I'd risk $12 on a bag of these before risking three figures on some RBA/RDA and mod thing like the big kids use. I'm so glad I did. I prefer the taste of the vapor from a cotton wick vs. a silica one. It could just be my imagination, but it seems like they give me thicker, more pleasant vapor than the stock cores did, too. It's been a while since I used one of the stock cores, though.
Passing along the standard warning I got from various sources when researching this -
silica wicks don't burn if they're dry; cotton wicks DO! After installing a core with a fresh cotton wick, turn the tank upright and
let the juice soak in for a minute or two before you fire the battery. Cotton smells bad and tastes worse when it burns.
(I confirmed that myself when learning about the wicking action limitations on a clone of a Russian 91% RBA ... which I tried a while after testing the clonecores in my emows. It's not bad, but I still use the emow tanks, too.)
I've not had any issues with DOA clonecores, nor have I had any flooding, leaking, or dry hit issues with them in my mow tanks. The 1.5 Ohm brand coils, from what I've seen, run at or slightly above 1.5. The 1.5 Ohm clonecores I've seen seem to run at or slightly below, say 1.4-1.5. I've got one battery (the one that came with a mega emow kit) which won't fire maybe one out of four clonecores, and I'm just about certain that's from the battery having a higher resistance cutoff than my others.
(I noticed the brandname cores that came with the mega kit look and fit the same as those that came with the standard kit, but they're marked 1.8 Ohm vs. the standard kit's 1.5. More confirmation that particular battery's protection circuitry has higher minimum allowable resistance.) I have standard emow kit batteries, a Vision spinner II, and a Green Vaper ego V4 - the clonecores play well with all of those out of the box.
I've been rewicking the clonecores and reusing them for a while. After storing up five or so whose coils had either broken or just looked/smelled too gunky I recently tried making them new coils. It's certainly doable and works pretty much like the various youtube tutorials I saw, but I'm still figuring just what size coil(s) to wrap on what kind of mandrel to suit me and my various batteries. Even if I decide against full rebuilds I still seem to be able to get 3-6 uses out of one core with only wick changes.