I am setting up a ~170 gal reef tank. If I bring home some sand from the ocean to help seed it out, how much should I bring? Do I want only shallow sand or is some of the darker dirtier sand helpful for beneficial organisms and bacteria? Can I use only this or should I still buy commercial sand? If so, what are some sand options? I don't think I need it to be live because I am going to purchase quite a bit of live rock, not sure how much yet, still researching that.
I am planning for live rock, fish, soft corals and inverts.
I am planning for live rock, fish, soft corals and inverts.

