Coral Frag Plugs 20mm (x25) Oceans Wonders Coral Frag Plugs are perfect for the propagation or fragging of hard and soft branching corals such as Acropora, Birdsnest, Montipora, Kenya Trees, Xenia, ect. They have a 3/4" crown with a 7/16" base and fit perfectly into standard eggcrate or into small cracks or crevices in live rock. They are made from a fused special...