Is the main fire in this picture primary or secondary combustion? I would assume this is mainly primary. What I would consider secondary is the turbulent flaming jets that come out of my secondaries. I hear of people talking about turning down until the secondaries are “lazy”. I don’t really ever see lazy secondaries. Sometimes I will see pretty flame fronts propagate through the box when turned down though.
![Is this considered secondary burn? Is this considered secondary burn?](https://www.hearth.com/talk/data/attachments/293/293243-13c2228dc6f8346a549e512aae19079a.jpg)
![Is this considered secondary burn? Is this considered secondary burn?](https://www.hearth.com/talk/data/attachments/293/293243-13c2228dc6f8346a549e512aae19079a.jpg)