Quarintine tank problems

[wooden_reefer]

Some people do close to 100% water changes. As long as the water parameters (temp. salinity, etc.) are the same it shouldn't be an issue as long as it doesn't stress the fish too much.

I do 100% WC sometimes when I have to use a antibiotic against bacterial infection that harms nitrification bacteria.

I do it less often now because I tend more to use an antibiotics that harms nitrification bacteria less.

 

[KingwoodMarcia]

I would not use water from your tank when treating. Use RO water from the store or your own. Just watch your PH.