Rock?

[Pattylucylaura]

I saw this rock at the lfs that is basicly an all around pet store they have this rock sitting around called texas holey rock is it possible to use this in saltwater tank like we would use base rock if it is possible to use this how do we acclimate it.

 

[guitar_lord]

It depends what's in the rock and what type of rock it is...
some rocks contain contaminants like metals, phosphates etc.
(copper is not something you want in your tank if you plan on keeping inverts/corals)

Putting these in your tank would not be a good idea - its always best to use live rock that comes from an established tank - or at least rock that you know is reef safe - HTH