I am jus starting with a SW tank and have been reading alot of posts here to figure out what i need to do and such. I have a 55g tank and am going for a reef setup. I was thinking about getting some dry rock and then seeding with some live rock. I looked at the basic equipment list and went to the sites that have the live rock and was reading one that said i could get some things with the rock that i dont want to have in my tank. Is this somethign I should worry about or is it ok to get the LR from an online store. LFS has live rock but i am always leary about lfs since u dont know how long its been there and most of the places online are considerably cheaper.