As already stated, if the problem is only discovered when the parasite has made large inroads into many fish, then severe casualties are to be anticipated. Older fish of certain species often will resist the infection, though they will also succumb in many instances if no action is taken. Young fish typically will die like flies, if they are not helped with appropriate action by the Aquarist. However if a suitable remedial regimen is introduced, excellent results can be expected. Treatment Several forms of treatment have given good results.
Reports are variable but mostly good .
When the treatment is finished which if possible should be done in a quarantine tank, the water should be either thrown away, or filtered over charcoal. This treatment is widely referred to in the literature, but has to be used with extreme care, as many fish are highly susceptible to Copper, and vary species by species in the toleration of it. Furthermore the hardness or otherwise of the water plays a critical role in the effect of the Copper. If it is not hard enough then no benefit will ensue. Then use this stock solution at 8 ml to treat a US Gal or 3.8 litres.