get Fiji cultured live rock, its better for the environment, what it is is a piece of aragonite and some other weird stuff like calcium and stuff, its forged together by concrete and is placed in a reef for a desired amount of time to make it live. Then it is "harvested" and sold to reefers. It is environmentally friendly since it isn't damaging our earths reefs and costs about the same as normal live rock. You shouldn't buy it on the internet either as you can chose what piece of rock you want