copper sulfate-help please

davidank

New member
ok, I will sum this up as best as I can but be as thorough as I can:

I have a 55 gal. tank and had it set up about 6 months and all basic parameters are good - nitrates about 4ppm or less, no amonia, no nitrites, salinity i kept at .25, temp around 78 consistantly, 60 lbs fiji live rock.

after having a yellow tail damsel, a black domino damsel, I introduced a yellow tang that i had in a quarantine tank but still put ich into the tank. I assume it was the tang because I never had ich yet and the next day after putting it into the display tank I seen those nice white ich spots.

Being the first time with ich and first time with a saltwater tank, I'm no pro in dealing with it, so I dosed with copper sulfate after the coralline algea was really taking hold. I found out afterwareds to not dose copper sulfate because it stays in the substrate and I can't get it out of the live rock.

After i took out all the substrate and all the LR and completely drained out the tanks water and wiped it dry with paper towels, I filled it back up with brand new argonite substrate (and chose a MUCH thinner bed depth) and filled it with RODI water and got the salinity and etc set to the proper levels.

Now, a few days later, I just introduced the hermits to the tank, & they needed new shells, so my girlfriend (not knowing) dipped the new empty hermit shells into the small bowel of water to rinse them off, that I used as a quick fresh water dip for the hermits before i put them into the display tank, that had a small amount of copper sulfate in it to help kill any ich that might be on them.

There was only about 5 drops of copper sulfate in about 16 ounces of water, and I am not sure of any exact amount of copper sulfate that might (and I am sure) did get back into the display tank.

Do I need to drain the whole tank again because of this tiny amount that probably got into water. I was going to be buying 60 lbs of live rock this week (totally cured from a friends tank he is tearing down) but I dont want to buy all this LR if it's only going to die and not grow any corraline again because of the copper sulfate.

Am I ok or is this tiny amount of copper sulfate that I am sure is in the water going to make me have to drain out all the water again and get all new substrate again. Is this tiny amount - about 1 drop in 55 gal water - ok or am I screwed and I have to start all over again.

Thanks in advance for reading this lengthy post and help.

-Dave
 
I would say that it depends on your comfort level. Most calcium/magnesium will have copper contamination, your fish food has copper in it. I don't feel up to doing the math right now but off the top of my head your looking at somewhere in the ppb range.

In the end it's up to you. Would I do it, you bet. Then again I don't have 15,000 invested in my tank. HTH
 
when you say you'd do it, do you mean you'd empty the tank again and put in the new substrate, or just put the rock in and not empy the tank again.
 
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