How tough is the epoxy?

[fishiefishie]

I think I'm finally ready to epoxy my frags in place, but am wondering how hard it would be to move them if I need to (say, they end up not doing so great there, or when I upgrade my tank).
Also, can I epoxy a frag disk with a montipora cap directly onto the back glass of my tank?
Thanks!

 

[Amphiprion]

I think I'm finally ready to epoxy my frags in place, but am wondering how hard it would be to move them if I need to (say, they end up not doing so great there, or when I upgrade my tank).
Also, can I epoxy a frag disk with a montipora cap directly onto the back glass of my tank?
Thanks!

You can, but I've found it to be a bit harder to do, unless there is a lot of coralline on the back glass. Superglue (cyanoacrylate-based only) helps with this. It is relatively easy to remove, as long as you haven't used a lot and it isn't fully gripped in a lot of rock crevices. It is harder to deal with then, but not impossible to move if needed. You'd just have to apply a bit more force.