Coral growing on glass

[Manny’s Reef]

I've seen many photos where people have encrusting corals placed on the bare bottom glass. In time, these obviously encrust on the glass. Is this not a long term problem for those doing so? I mean, I imagine it requires chiseling the coral to remove it. What happens when you upgrade tanks? When its time to move? Or you tank busts a seam? Just after the thought process here and wondering if perhaps I am missing something. Maybe the coral is actually really easy to remove. Not sure. Discussion?

 

[DanyL]

Encrusting corals such as Acros, Montis and Cyphastrea come off very easily from glass.
If they have a very big encrustation then some of it will break. but it's not such a big deal either - you just get some frags to share.

 

[HB AL]

Believe it or not most can be carefully removed completely with no damage, I use a sharpened putty knife, they come off the glass surface rather easily and a majority of the time you get the whole colony without breaking it off a piece at a time.

 

[Manny’s Reef]

Wow. I would not have guessed. Thanks you two for the input.