HOW TO CUT YOUR ROCK

[Snaz]

Originally Posted by Mandosh

...screwdriver, chisel...

as far a as how they can stay out of the water, for the corals you listed...a lot longer than it's going to take you to break them up. All three of those will be fine.

Any sponge will die if it drains of water, so if you have sponge on your rocks you want to keep cut it while submerged.