Adding dry rock

[rockmp]

I want to add a couple of pieces of dry rock to my aquascape to build it up. My tank has been up and running for about 9 months. Will this harm my tank and/or what will happen to it?

[StevenSeas]

Shouldn't have any negative effects that are detectable. There is nothing live on it so no die off, so you shouldn't get a spike or anything like that.

[Europhyllia]

depends on the dry rock.
fossil rock shouldn't have much on it. dried liverock might have some organics left to decay

[RayAllen]

Mark you have nothing to worry about. If you have any doubt boil them in some RO water then place them in the tank.

[marcusgonzales210]

I recently heard of someone boiling/baking their rock and then placing it in the freezer.

[Regric25]

I just added 100 pounds of dryrock from marcorocks.com to my stocked cycled tank with 0 ill effects. You are good to go bud!

[rockmp]

Thanks everyone! Looks like I have a project for the weekend!

[Europhyllia]

So WHICH kind of dry rock did you get?
Seriously there is a difference...

[rockmp]

So WHICH kind of dry rock did you get?
Seriously there is a difference...

I have not purchased it yet. I was thinking of getting some from Ed over at Phenomenal Aquatics. Do you think that rock will be ok?

[Europhyllia]

Fossil rock:
http://www.marcorocks.com/index.asp?...TS&Category=42 (Marco Rocks Key Largo)
http://reefcleaners.org/index.php?pa...mart&Itemid=34 (ReefCleaners Florida Reef Rock)
http://www.bulkreefsupply.com/store/...-eco-rock.html (BulkReefSupply Reef Saver)

Dried Liverock:
http://www.bulkreefsupply.com/store/...-eco-rock.html (BulkReefSupply Dry Pukani)
http://www.marcorocks.com/index.asp?...PROD&ProdID=40 (MarcoRocks Signature Fiji - hasn't been in stock for months)
http://www.culturedaquaticlife.com/p...k_Detail.shtml (Cultured Marine Pukani Dry Rock)

Fossil rock hasn't been in a reef for millions of years. It's fossilized. No organics left on it. Pure rock.
I'd put fossilized rock in a running tank without much worries

Dried liverock has been in a reef not too long ago. True everything on it is dead and gone. Some sellers clean them very thoroughly but there still is a good chance that organic debris is left on there somewhere (sponges, etc.). Is it going to be some major stuff? Probably not. But I'd consider a little more prep work for this kind of rock than for the other kind.