Quick Guide: Aetherial Reduction and Why You Should Be Doing It

[Roth_Trailfinder]

HW nodes spawn in three sets of two, and the Ephemeral node as a set of one. That means, there are FOUR sets, with SEVEN NODES divided fairly evenly among them.

If you do anything with one of those four sets, then go and touch (open without gathering, gather one item, or completely empty) ONE node from each of TWO OTHER SETS then the first set respawns.

If it helps you to think of it this way, ARR nodes were four sets of one each. Hit one node, then a second, then a third, and the first would respawn. In HW, it only takes one of the set to count as hitting that set, even though the set has another node associated with it.