Dipping live rock

[jason604]

Hey just got a bunch of liverock from a fellow reefer that been in his sump for years. Looks clean. Should I just toss it right into my tank or can I use revive dip on it too?

[Coral Hoarder]

Diping stuns not kils well on ocation it kills but normaly it stuns and things get stuck in the rock then recover

[craigwmiller]

If you want the healthy fauna of his 'live' rock, then don't dip it... Live rock is just that, alive with countless micro fauna, dipping it could cause die-off and then huge ammonia/etc leaching

You could sorta-quarantine it if you had another tank that didn't have any fish/rock/etc/etc in it (say a dedicated tank for water changes/etc) -- but you'd really only be quarantining for the larger-critters (evil crabs, mantis shrimp, etc), the micro fauna will find it's way into the water column no matter where the rock is put.

I have on 2 occasions taken live rock from tanks that I trusted to not have really bad things in it -- but it's still a risk.

[gregzz4]

If it were me, I'd shake the crap out of it in a bucket to catch/save all the iso/amphi/copepods I could and put them straight into my system

Then I'd put the new LR in a tub or bucket with a heater, powerhead and a loose lid (to block light only, not airflow) for weeks while I looked it over for crabs, mojano, aiptasia; monitor it for phosphates and algae; the list goes on

[jason604]

Too late I just tossed it all in the sump =)

[Aquattro]

Originally Posted by jason604

Too late I just tossed it all in the sump =)

Rock that's been sitting in a sump for years should have been tossed in the garbage, not your tank.
Greg gave you the best advice if you wanted to actually use it. Although I'm not sure why you got more rock just to add it to your sump.