Right, I remember discussing this a few months ago and went back to where Dkeller_nc stated....
"You are correct that bleach oxidizes organics, but the issue is that it oxidizes some organics. "
And he also discussed the use of sodium hydroxide (NaOH). I have some on hand and wondering if that will do the trick, and quicker?
Ok, I've just performed this task again after my tank crashed during the winter snow storm we had back here on the east coast. Its taken me awhile but I soaked the rock in a water-bleach solution for a long time (a few months, not in purpose just didnt have the time). then drained and rinsed and soaked in a water-acid solution for a day or so. Finally I rinsed the rock with a garden hose, let dry outside for a day, then put into a 100g tub of RODI.
I'm no expert or chemist, but it seems to me that by using a garden hose and regular tap water to rinse everything off you added nutrients, etc. right back onto the rock. I just bleached and acid bathed my rock but after I finished with the acid I rinsed in fresh RO/DI water then let it dry.
And to requote Randy's answer
"What are you trying to accomplish?
To kill things, use bleach.
To remove copper or phosphate, use acid. "![]()
Unless the tank had some sort of infectious disease or dangerous pest, I'd just rinse the rock well and cure it, personally.
Lye is nasty stuff. As Bertoni said, I'd skip the caustic chemicals at this point and just cure the rocks over time as if they were new.
I'm no expert or chemist, but it seems to me that by using a garden hose and regular tap water to rinse everything off you added nutrients, etc. right back onto the rock. I just bleached and acid bathed my rock but after I finished with the acid I rinsed in fresh RO/DI water then let it dry.
The nitrate would come from organic debris, assuming the water going into the tank is nitrate-free.![]()
I'm using RODI. could nitrate be in my tap water and possibly making it through my RODI if the filters needed to be changed?
It was a phosphate article, but the math is likely similar: the input of a small amount of nitrate in top off water is not likely a significant contributor to the overall nitrate level in a reef tank.![]()