Never said boil the crap out of the rock Chris! LOL, that was Krish.
Yea that was me, I believe it was bleach it, boil it and then cook it. :rip:
As we all know LR at the best of times, is coral that has been sitting dead for hundreds of year, well in that time it picks up alot of renters, mainly sponge (which we all know can be a bear itself) , detritus and similar from the millions of microscopic critters that have live, died and reduced with in it, and then a whole host of other things. One has to look at LR as more of a polisher of water, yes it does nitrify and denitrify but it is so clogged with crap that it is very inefficient. The only good thing is that through bacterial tugor it will shed this crap out of itself (something LS cant because of the bottom glass). So anyway Chris has been battling algae for a while now and although he has been doing all the right moves in terms of treating his water (fighting nutrients) the LR is the producer and the algae have now created an enviroment for themselves that it doesnt really matter what Chris does to the water, the algae will still thrive.
If you look at the rock you can see a fes different types of algae, mainly the slime hair algae and the cyano. They have basically egulfed the rock and are sucking and living off the detritus that the rock is putting off and on the other side taking what ever is in the water kind of a win win for them. At this pont the rock has become mostly anaerobic as i does not have any real oxygenated water flowing into it, you can see that by the denitrogen gas being caught up in the hair algae and the the cyano is in seventh heaven. So the tank now has lost a major player in the biological filtration that this tank is heavily relient on. So now thats all being put on the sand which is also not the most efficient and its begining to get cyano and show signs of being overwhelmed. SO you stilll could keep the tank up and get some algae eating fish, do alot of harvesting and so on, but I figured after about a year of this it might be a better idea to have a fresh start.
Anyway the idea is to take the rock out, stick it in some garbage cans with half bleach and half water and a power head and just let everything in it die die die for a few days. Then it goes into boiling water to off gas the ammonia a bit and then into some clean sw cans to shed for a few weeks to month. From that point you should end up with fresh clean and vacant rock. Kind of look at it like taking a rock apartment building out of the ghetto, doing a big reno and then allowing the residents you want back into a wide open, well vented building!! Time to raise the rent!!
MOjo