what I have done if take the rock out of the water. Pat it down with a cloth to absord and water. Put the super glue on the rock then place the zoo's onto the rock. keeping it out of the water for a minute or two. Then place it back ito the water. Super glue will not work with mushrooms or xenia. mushrooms I place rubber bands on the rock and place the mushrooms under the rubber bands. Xenia's I place the stalks under the rubber band. The stalk will attatch to the rock within two days. I do this regularly with xenia's.