Originally Posted by Navarcus
This may seem like a dumb question but.....What is the difference between cured live rock and uncured liverock? Which is better to get? I am going to be cycling my tank with this so if I get uncured rock will it be harmful?
Uncured is full of skanky dead stuff that is in the process of rotting. It stinks to high heaven, and my understanding is that it's not appropriate for addition to an existing tank with live occupants.
Originally Posted by Navarcus
Also how do you "cure" liverock?
Others can correct me on this, as I've never gone through the process, but I believe you cure it by placing it in saltwater with a bubbler or some other current-making device, and doing multiple water changes over a period of days or weeks until all the dead stuff has come off. You then spray it down with saltwater to remove any remaining gunk and place it in your tank.
Originally Posted by Navarcus
Which is better to get?
In my opinion, curing it yourself involves a rather messy, smelly, and generally unnecessary process, so I'd suggest buying pre-cured rock. You still have to watch it to make sure it's really been cured (i.e the rotten stuff's really been removed).
I've heard some suggest that the uncured stuff can provide a big fat ammonia spike to help move along cycling in a new tank. I think that you wind up with way too much of a good thing, however, inasmuch as too much ammonia might wind up killing the remaining living organisms whose presence on the rock give it its value.
Just my 2 cents...