"The seal on a grande is a rubber stopper that plugs the opening and is held in place by an aluminum cap crimped onto the lip of the bottle. I don't think the stopper is glued into place normally. Or at least didn't use to be. Now that I…"
"Has anyone replaced the liquid on the new lamps? I have a grande from 2017 that is balanced to run with zero propylene glycol. Just straight up distilled water, which of course is much easier to freeze than a lamp with say 30% propylene glycol."
"There's somebody on Reddit who added bleach to an Astro mini to change the color of the liquid. I'm sure a little bleach would help prevent growth, although I don't know how the wax would react long term. "
"Since you are experimenting with propylene glycol you may be interested in this old patent.
In it Mr Walker describes using 30% pg to improve startup time and lessen the effects of ambient…"