ICH parasite could be in the rock??

[castroantonio]

I have a Ich problem with my fishes.. I have a 200 gallons tank FOWLR.
Today I get out all fishes and put them in a QT with Cupramine.
Im thinking to make a (100%) total water change. I have had this before.. total water change) no problem with NH3 and N02.)

But I have a doubt.
do you think that the parasit could be in the rock??
with only a Total water change the parasite will be eliminated??

anybody with some advise!
Thank you

 

[cerianthus]

Even with total water changes, there is good possibility that tank may hold parasites. this is what i learned recently. Crypt 9marine ick) and Amylood (marine velvet) are obligate parasites meaning w/o host, it will die off. Hold the fishes, even free of ick, in Q/T for month or so then acclimated them back to main tank. i dont know Q/T size and amount of fish. Monitor the water very closely if Q/T is packed. Google for hyposalinity procedure. May able to cure ick w/o any med!!