Brad Rogers
Member
Chingchai, I hope you don't mind I post a link for rock work...this is just for fyi...it's a lengthy thread talking about DIY rock.
http://reefcentral.com/forums/showthread.php?s=&threadid=807988&perpage=25&pagenumber=1
http://reefcentral.com/forums/showthread.php?s=&threadid=807988&perpage=25&pagenumber=1