How long should I boil live rock for?

[Madreefer]

I've boiled lots of live rock and have had no problems at all. I just let it sit (cook) in RO water afterwards. I just did'nt put it all in at once. Every two weeks I would grab a peice and rinse it really good with RO water and put it in the tank and do so every two weeks until all the rock was back in. No problems and within a month the rock is once again full of life.