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Originally Posted by MikeP
Does all LR need to be cured? I thought most of the stuff at the LFS was cured already. I could put it in a large rubbermaid, would it need to be heated? How long does it take to cure? I plan to use some base rock too, is there anything that needs to be done with it before it goes in the tank?
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As Anthony states, most LR will not be cured. You will need to have great circulation and a heater when curing LR in a rubbermaid or other container. The LR will take up to six weeks to cure. When you have no detectible ammonia or nitrite, your rock will be cured.
Here's my page on
curing small amounts of LR. For larger amounts of LR, use a larger powerhead than described in the article.