Please allow this structure to be compatible with Terraforged. Thank you.

https://github.com/TerraForged/TerraForged/wiki/Mod:-Structures:-Compatibility

(relating to this ticket)
TerraForged/tracker#105

The towers are generated as Features, not Structures. The apoth config that lets you turn down the frequency works fine for adjusting how often they generate, even in TF worlds.