Worms? Good or Bad?

[ZaSheik]

For the looks? Or because it can be a threat?

[Ninong]

Because of its composition. It's not pure limestone. It's sedimentary rock that includes sand and phosphate, among other things. I don't think it would be safe.

Some people in Florida ask about using limestone as a base for their good live rock and even that can be risky because it may contain impurities. Limestone is compressed calcium-carbonate material that was originally corals, clams, foraminiferans, etc. but it can contain iron and other impurities that it picked up over the hundreds of thousands or millions of years as the Earth's crust buckled and folded in response to plate tectonics.

Live rock, which is not rock, is nothing more than coral -- dead coral -- that drifted around on the sea floor near the reef that it broke off of during a storm, or whatever. It gradually acquired a lot of beneficial life, most of which is out of sight inside the live rock. That's because it's highly porous, unlike real rock.

You can still use two-thirds cheapy base rock and one-third good quality live rock and eventually the stuff on and inside the good live rock will migrate to the cheapy base rock and make it good live rock in no time at all -- like maybe 18 months or so.

Good luck!

[ZaSheik]

Thank You!

youve been an awesome help