I don't know much about aquariums but wouldn't the copper or the formalin wreak havoc with the beneficial bacteria in your filter? Even if it doesn't when you say "sprinkle" are you measuring out a precise amount or guessing? Remember many therapeutic drugs are just under the threshold to kill the patient.

Last edited by Cecil Baird1; 08/18/07 04:25 PM.
If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.