There is a marine epoxy that works quite well for putting live rock together, some fish stores even sell it in a purple color to match corraline growth, but they want $10.00 bucks for it, and HomeDepot/Lowes, etc. sell the white stuff for $2.00.
this is the stuff i used:
http://polymericsystems.com/aquamend.htm">http://polymericsystems.com/aquamend.htm</a>
I pieced my LR together and let it cure for 48hrs (in a 5g bucket of saltwater w/ pump and heater) before putting it in my tank... here's a thread about it:
[IMG]http://www.reefcentral.com/forums/showthread.php?s=&threadid=1051580">http://www.reefcentral.com/forums/showthread.php?s=&threadid=1051580</a>
hth,
Matt
