HOW TO CUT YOUR ROCK
 

hey, just wondering, i am trying to frag my corals and remove some others off the same rock, what is the best way to cut the rock and split up the corals.. on one rock i am green star pols, zoas and a few mushrooms.. i wanna seperate these things
thanks

also, how long can they stay out of water to break them up

Bone cutters, grinder, snips etc,

...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.