DonJasper said:
I'd suggest you read Boomer's post on the first page. If you're going to 'cook' everything but the microbes off the rock - then there's no point in going out of your way to have anything but microbes to begin with.
I've got to disagree with you on this.
I didn't cook my rocks to kill everything but the microbes. For a start it doesn't kill everything, but will kill most photo synthetic life.
I started some years ago with well cured base rock and some premium well shaped Fuji rock, also already cured. This came from a well respected and capable LFS who go to great trouble to cure the rock properly and retain as much "life" as possible given the time it takes to ship LR to the UK.
This LR has performed well for about 6 years, maybe 7, and retained much of the "life" it originally had, which I accept is precious little compared to what it has in the sea.
I "cooked" my rock because I had a nutrient problem mainly caused by my own neglect and poor circulation, again, my fault. My rock was full of "mud" which I needed to remove. The killing of anything else was a side effect.
A great many people have had set ups for far longer than me, which, with proper management and good circulation, still look good with healthy fish and colourful corals that grow well, they don't need to "cook" their rock.
So I didn't cook my LR to kill everthing but the microbes, it was the only way I could see to clean the inside of it properly.
John