Since I have seen posts of people not having bubbles on their water.
I haven't gotten any bubbles for months! I realized that it depends on what I'm chanting of petitioning.
So, for example today I used halo for mother in law and I relationship. And it has bubbles from the middle of the glass all the way to the top. Like I said, no bubbles for months chanting for myself, for my relationship with boyfriend, crossroads, mercuries and high John. 🤷♀️ and I used the same tap water for all. Just a thought for people who questions the bubbles
Try not to worry too much about the bubbles. Sometimes it can simply be the spirits taking something else nearby as an offering.