Coral Gum instant is a two-component coral adhesive for safe cementing of coral fragments to stone substrates. No deleterious matter or adhesive residue is introduced into the aquarium water; it is unbreakable, yet remains flexible and withstands high loads.

Can be used in fresh-water and marine aquariums.

Contents: 2 x 200g (14.11oz.)

http://www.tunze.com/fileadmin/gebrauchsanleitungen/x0104.7588.pdf