于 2003-10-20 00:15 If your tank is fish only tank i suggest the following
1. cupramine by Seachem and maintain the Cu to about 0.3 to 0.45 each day 2 buy a Cu test kit to test the Cu level,... you have to test the Cu every day to maintain the Cu level
then after five day remove some of water and replace some of the Cu and repeat for 15 days .. it will gone ....