You maybe w/in the 30 days and whatever makes you comfortable and stay off analogs. I got two tanks out of about 30 that had a plastic/chemical taste. I found out on here that possibly out of the factory, a little bit of primer or what have you may have been coated on the wicks.
Now I rinse all my tanks/wicks prior to use brand new out of package or if they are used and im changing flavors and let them dry, then use. I've never had the issue again. It is a learning curve and frustrating when you've done your research, spent the money and having nic fits! Trust me, I know. I nearly quit the whole vape thing w/in my first week due to a horrific dry hit. Nearly knocked my socks off!!
I got talked from jumping off the ledge so to speak, taught the proper way of doing things and its been awesome since then. Halo stuff is high quality, but if you feel it's not for you, let them know and see what they are willing to do. And of course, plz voice any issues here and all of us can see if we can help! Keep us posted...