I recently ordered 40 pounds of man made dry rock from Amazon for $45 ish including tax and shipping. The rock is quite dusty though, so make sure to wash it a bunch before putting it in the tank. If anyone is trying to get rock at more than 50% off most fish stores sell per pound here is the link: https://www.amazon.com/gp/product/B0002DI7F0/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
^ seems like its sold out for now, but https://www.amazon.com/Natures-Ocea...66&s=gateway&sprefix=live+rock,aps,215&sr=8-3 this link has 40 pounds for $55.
^ seems like its sold out for now, but https://www.amazon.com/Natures-Ocea...66&s=gateway&sprefix=live+rock,aps,215&sr=8-3 this link has 40 pounds for $55.