Quick help glueing rock under water

[Jl330]

Bought a rock covered in zoas and tried superglueing it to my structure. Held fine for a couple days and looms like my turbos knocked it off. Missed my acan colony by a hair so I'm trying to find a more permanent solution.

 

[Reefing Madness]

Epoxy
https://www.bulkreefsupply.com/coralline-purple-oceans-wonders-reef-epoxy.html
https://www.reef2reef.com/threads/what-do-you-use-to-hold-your-live-rock-scape-together.109718/