Each arch is fully cured and ready for your aquarium.
Every arch is different, and it is made of very lightweight porous material.
The arches are full of small holes that will soon be inhabited by the GOOD GUY bacteria that comes with the coralline starter. You can choose the size of your arch by telling us how big your reef aquarium is. We will send the right size so you can grow a great center piece sculpture. We have cured each arch in Geothermal water that is very soft. The surface of each arch has a variety of Aragonite covering it.