resin/cement for use in aquarium?
ok, i have seen several aquarium backrounds made from anything from concrete to styrafoam, but all everyone lists for the coating is either concrete, cement, hobby cement, or resin. after all the specifics about the coloring used to tint the cement being used, no one lists EXACTLY what they are using.
is there a type of resin or cement readily available at a hobby shop or hardware store or home improvement store that is non toxic and safe?
last thing i want is to pick up something that seems safe, cycle the tank, and have the fish i put in die in a few weeks.
suggestions DIY veterans?