it will work just as well for new rock, you think that they don't adsorb anything while they are in the Ocean.. :mrgreen: and judging by the rock I have seen comming in laitly (loaded with algaes) it couldn't hurt.

Steve

I can attest to the fact that pressure washing just gets the bulk of the crap off. It doesn't get into every nook and cranny to get out all the algae. It was great for a few months but ultimately Grape caulerpa 1, powerwasher 0 :wink:

I think this should be an absolute last resort to get something useful from rock which has become overrun with algae and otherwise useless ....because when you are done you have biological filtration rock...not live rock anymore (sorry, my opinion only)

For me...good live rock should be treated with as much respect for the life on it as you might with a new fish. Goodness knows it costs enough! LR is (by a factor of 10) the most expensive live thing that I've put in my tank.

I do respect that everybody wants something different from their tank. Me..I expect a lot more from my live rock.

Live rock is merely rock that is loaded with bacteria. when you cook rock you end up with rock that is loaded with bacteria, pods, worms, and other critters.. all you lose is the vegetation. so in essence it is "clean, renewed live rock"

Steve

That will prevent the harvest of more from nature...seems to be a good idea to me

You'll only lose photosynthetic organisms such as algae when you cook rock. Everything else stays alive because you're keeping the water heated and circulating.

After cooking my rock there's still an abundance of pods, worms and other critters including fan worms, hydroids, sponges, baby brittle stars etc. There was even a sabon shrimp hitch-hiker that I had never noticed before until I was returning the rock to the display tank and it literally jumped out at me!

[quote]Live rock is merely rock that is loaded with bacteria.[\quote]

That's one opinion, but maybe there should be different terms to describe Live Rock. I propose that be called "filtration rock", not "live rock"....or call it "live rock" and other stuff "real life rock"....Whatever, but they are very different things and need to be handled differently.

If all one wants is biological filtration, why not just fill one's tank with porous ceramic structures that are shaped just the way you want? That would have to be cheaper and you could create exactly the shapes you want.

I don't think it is legal to harvest rock anywhere anymore. It shouldn't be, anyway. Certainly, no one should purchase anything but aquacultured rock these days. I would like to see the LFS produce more documentation on how the rock that they sell was obtained. I doubt the industry is very regulated in places like Vanuuatu (sp?).

Regardless, it is my experience that the rock sold by most LFS has endured such a trip that it has mostly died anyway.

Here's a link to a Spanish forum (translated to English).Some good info on cooking rock.

http://www.todomarino.com/forum/show...1153#post71153

Interesting subject.

I bought some LR from the lfs over a year ago. Scrubbed it a bit in changewater to remove obvious dead stuff and hair-type algae from sitting in the lfs's tank. Then I cured it in a container other than my display tanks to make sure very little of the detritus and nitrate/phosphate from the rock went into the displays. I sort of followed the "rock cooking" proceedure, with the swishing and water changes, though the curing tank was always subject to ambient kitchen daylight.

Once cured, and it went into two upgraded tanks with rock cured a year or two year before from the old tanks.

Wasn't paying very close attention to the chemistry of these two tanks until about 8 months ago. Even then, tank chemistry attention was a sporadic, if well-meant, gesture to the two tanks. There were weeks where I would dose kalk nightly, then weeks when I wouldn't. Coralline growth during this time was good.

Low Ca levels were not an issue when I dosed kalk, so I test and adust Ca infrequently. However, once I started paying closer attention to alk and Mg levels, and religiously dosing kalk nightly, various macroalgae begin to grow and coralline growth is beginning to explode. I now have halimeda sprouting out of two rocks that showed no inclination toward decorative algae growth for months and months previously.

I'm quite thrilled that halimeda has grown from these rocks :biggrin: It looks beautiful, and makes me want to find a way to pay closer attention to the chemistry of these two and my third tank without too much hassle. Am going to begin daily dosing of alk booster as well as Mg and keep records of what I dose and when. Will also keep a less close eye on Ca, but figure once I get the alk and Mg levels stable, Ca will probably require more attention. I will also begin testing intermittently and record these results as well, so I can tell if my daily dosing is maintaining alk, Mg and Ca at the right levels.

Anyway, no matter how dead LR looks due to its horrible trip from its home in the ocean, with the right care, it will surely come alive.

Just, please, do not pressure wash it with freshwater :eek: Of course, that's just my two cents.

[quote=untamed]If you read more than the first sentence in my post I went on to say that worms, pods, ect..... is kept alive during the cooking process. so it definitely is live rock.

here is a quote for the definition of live rock "The term live rock refers to coral rubble colonized by marine organisms and cleaned to reef tank use. Its most important characteristics are porosity, origin, cleanliness, and what grows upon it"

So as for what grows apon it, it goes further to say that care full handling and cleaning remove most algae before we get it, as this is undesirable to put in a new reef tank.. I know every body likes different things in the rock, for instance I like bare rock with only Coraline on it and critters, but no plant life. where some one else might hate worms but like Halimeda, but lest not argue about what live rock is as it has been defined and that definition will never change. personally after losing my tank to calurpa I will ensure there is no algae on any rock I get, others might not care, but cooking is no more than a way to "unclog" the rock and kill of any plant life.


It is legal and it should be. although they cannot blow up reefs for rock anymore (which I never agreed with) they can harvest storm damage and thats what they do. If you can find some one locally that is selling aqua cultured rock I will be amazed and if you do, tell me so I will stay away from that. Aqua cultured is about 2to 5 times more heavy, as it is blasted lime rock put into the water, does pour job at filtering compared to real live rock and probably has about 1/10 of the "bug" life on it.. but you will be happy to know it will still come with lots of algae :rolleyes: I remember seeing some about 2 or 3 years ago but store owners won't keep ordering an inferior product that won't sell.

Weird, every time I have bought rock it was loaded with critters.. what is this death you speak of. If you are talking about no algae on it well personally this is a good thing as you are not introducing an organism that under the right conditions will take over your tank. I have had lots of rocks that with in a couple weeks of being in my tank have started to grow sponges, feather dusters, etc so either you are looking at a isolated case or the place you keep looking at isn't to worried about keeping it nice.