Hi guys I just got some dry rock to add to my current tank and improve my aquascape. So what im trying to figure out is what epoxy putty works and is reef safe... i know all the actual aquarium ones are junk. Im looking at the EPO putty and the PC plumbing, Marine, or Pool? All the PC putties are NSF certified for potable water which equates to being reef safe right? or not? The pool one seems to be the best as its meant for underwater use and for bonding rock like materials, but actually that is the only one that im not sure that its ok for potable water. The epo putty has great reviews from the other side of the pond, and is just making its way over here? any experience with any of these or another good product will be very helpful?!?!