Hi
@Mel B, and welcome to ECF!
Sorry, I'm a bit late to the party (your thread) that I have just read through. I have a couple of questions if you don't mind:
1.) How long have you been vaping?
2.) Have you always used nicotine in your e-liquid; or is this the first time?
3.) Did you use nicotine-containing products prior to vaping? (cigarettes, pipe, cigar, chew, snus, ???) You mentioned using nicotine in lieu of caffeine (coffee), and I was wondering if you had previously used nicotine in any form.
4.) You mentioned you made a 30mL batch. How full did it fill the bottle? (to the brim, overflowing, up to the neck, left a significant gap, ???)
5.) where/how have you stored the mix after you made it?
6.) What was the PG/VG ratio you mixed?
7.) What is your nicotine concentrate base? (PG, VG, or some PG/VG ratio)
8.) How did you store your nicotine concentrate
prior to mixing with it? (room temp., freezer, refrigerator)
Sorry for the "twenty questions" (okay; I know there are only 8

); but three thoughts are running around in my mostly worthless head:
Questions 1-3 have to do with your potential sensitivity to nicotine. If you are not used to nicotine; then perhaps 3mg/mL is indeed too much for you, and reducing concentration might help.
Questions 4-8 have to do with possible issues with effective mixing/integration of the nicotine (how well it mixed throughout the total volume). If it didn't get mixed together thoroughly (you mentioned adding the nicotine "later"); it could have left you with "hot spots," or portions of the e-liquid with concentrated nicotine.
Question 6-7 also had to do with possible PG and/or VG sensitivities. Okay; this one
may be a bit of a long shot; but, for me... as a nearly 4 year vaper, who always needed to feel the vapor deep down in my lungs/chest (and therefore a direct-to-lung type of vaper), I started having "off" feelings. A heavy chest; a morning cough (similar to when I smoked), and ringing in my ears (I am in my mid-fifties; so this isn't new... but worse). Not being sure; I decided to try a few things:
First, I heard PG
"might" exacerbate ringing in the ears, so I moved to max VG (the only PG came from flavoring). Ringing got slightly better; but cough/heavy chest got worse.
Then, I tried higher PG. Cough/heavy chest got better, but ringing in the ears was back to were it was before (no worse, though no better, in spite of being higher in PG than I had previously tried).
Then, I upped my nicotine content, to try and reduce my overall vapor consumption (thinking this would reduce both VG (heavy chest) and PG (ringing ears) consumption). And, it "seems" to have worked, at least in the short term. My total liquid consumption has dropped equal to my nic increase (tripled my nic, from 6mg/mL to 18mg/mL; and my volume has gone from 15mL/day to 5mL/day). My chest feels better, I have no more morning coughs, and my ringing ears are better (also aided with a dietary change). This is only after one month plus; so long term benefits still remain to be seen.
There remains one element I still want to implement; moving from a direct-to-lung (DTL) tank (the only style I currently own), to a mouth-to-lung (MTL) tank. Budget, and my own indecisiveness, are the hold-up on this final piece of the puzzle. (I hope; maybe; sorta; kinda; I-have-no-freakin'-clue

)
PLEASE, keep us in the loop, and let us know what
your solution is. We are glad you have chosen to be a part of our community!
