curing base rock

chase33

New member
I purchased 100 pounds of base rock and didn't realize until now that it must be cured. How long does it normally take to cure base rock?
 
It could take months...you would do well to place the base rock and start the process but then add another 20 or 30 pounds of beautiful, hand-picked live rock on top to get things started. It'll cost more but this process is likely to try your patience either way...

Once you do complete the cycle and your ammonia and nitrite readings are zero and your nitrates are dropping, be sure to livestock very slowly and let all of that base rock develop a good bacterial colony without inducing another cycle.
 
Didn't realize it would take so long to cure base rock. I plan on adding 50/60 pounds of live rock (it's a 120g tqnk). Does it matter if the LR is placed on top of, below, or scattered in with the base rock?
 
AD, it takes months to cure base rock? I was under the impression that base rock with no life in it would only take a little while (3-4 weeks) for a cycle of anything that might have been attached in it/to it and during that time you could add some live cured rock to seed the useful bacteria, coraline, etc...

I had added base rock to my established tank when I had it going and never had a cycle (granted it was not a lot of base rock...) I am setting up my new tank now w/ 100 pounds of quary rock that is sold to the LFS' locally here as base rock.

While I am noticing some stuff floating around the tank, there doesn't appear to be very much and the skimmer is only pulling a little bit...test kits are on the way now, so I have no idea what the numbers are..no livestock or live rock has been added yet.
 
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that does not make sense????? how can base rock cause a cycle??? there is no life on it or atleast shouldn't be. If you added 1 million pounds of base rock to a established tank how could it cause a cycle???
 
Marcorocks is where I purhased my rocks. I have yet to perform any tests yet but you can look at the rock and see there is plenty of dead mushrooms and other material on it. After I put the rocks in the tank the skimmer began going crazy. It is producing much foam and prior to that it wasn't producing any.
 
the bigger issue (at least what I was trying to say, but not very clearly) isn't that the base rock itself causes a cycle (depending upon where/when/how it was harvested it may or may not have any dead material on it) but that it won't be able to support filtration until it is populated. You could put 300 pounds of base rock and clean sand in a big tank and not see any cycle...until you added a fish or two and started feeding.

Without the necessary bacterial colonies, the rock isn't doing what you want it to do.

It doesn't matter how you arrange the mixture of base rock and live rock...just place them so the shapes look good...in a couple of months the base rock will assume the same coloration and life as the live rock. Your cycle will take as long as the live rock requires...the base rock will probably not increase or decrease it at all.
 
AD, thanks for the detailed explanation. I plan on kicking my cycle today with one piece of live rock from the LFS and a grocery store shrimp..
 
I had added base rock to my established tank when I had it going and never had a cycle (granted it was not a lot of base rock...) [/qoute]

Thats because the base rock doesnt "cycle" like other live rock does. The only reason you'll see amonia spikes with live rock is if the bacteria has had die off and cant fully break down the amonia yet. With dry base rock, there's no bacteria that has died off for one, and for another, you've already got the established live rock currently cycling the tank.

Sure base rock might have old dead organics in it at first, and they might cause a spike, but its usually just going to be nitrates and normally isnt amonia. Its never been amonia for me anyways and i've added base rock to several tanks.

One way to get the base rock from leaching dead organics or whatever is to clean it really well and boil it if you can. Its already dry/dead, so its not like you're gonna kill anything. If its boiled that will get rid of a lot of stuff (and can also help with future algae caused by the rock)

I've even heard of people using a mild bleach solution on base rock to do this.
 
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