Aquascapers: did this reef use glue/rods for their scape?

[Miami Reef]

Based on this picture, do you think the used anything to bind the rocks together?

 

[Goaway]

Doesn't look like it to me. No floating islands.

 

[Waters]

Just looks like stacked rock to me.

 

[Goaway]

Pretty much just let the sps do the aquascaping.

 

[James_O]

I concur, just looks like stacked rocks to me. Nice tank, not gonna lie...