Originally Posted by 52cherish
Can this also be used as a preventative for the whole tank if one of the fish got popeye? I found one of our females dead in the tank this morning. Looking at her and at the fish I quarantined 5 days ago. Both have/had protruding eyes. The others in the tank don't. Now I am afraid it might spread. Would a preventative 10 day course of Epsom salt to the tank be beneficial or harmful? Thank you.
Popeye is usually bacterial in nature and related to poor water quality, the Epsom salt will help with the symptom by decreasing the swelling and have some effect on the bacteria.
Removing the cause is important by making daily water changes, depending on the size of tank and how much and how often the regular water change schedule is and nitrate level....will determine the water change percent that can be safely made.
In neglected tanks with high nitrates a large water changes can be deadly. If regular weekly water changes have been made and nitrate levels are less than 20ppm, I would start making 50% daily water changes, lower the water temp to 76F and add an air-stone, if the fish start to show signs of popeye then I would QT and treat with Epsom salt.
Anytime you have a death for unknown or known reasons it is a good idea to make a water changes....
Fresh clean dechlorinated water is the best preventive treatment IMO/E.