omg tank just blew out

[MitchM]

Be careful if adding live rock to help cycle the coral tank.

If the live rock is exposed to the air for any length of time you will probably have sponges dieing off right away.
If the LR came from sitting on a sand bed, there could be some H2S absorbed into the submerged areas of the rock. Once the LR is fully exposed, that would be released immediately into the new water.

Mitch