ok so fish gets stressed you buy it stress it more then move it to the display and stress it again??? OK!
I buy a healthy fish treat for parasites and drop it in my display. if your fish are healthy they wont get sick, thats what there slime coat is for.
I see your point though if you buy a sick fish you should qt.
if you lost 80% of your fish something else in the tank was stressing the other fish before the sick fish was added. maybe a larger fish picking on a smaller one, chemical change......
I buy a healthy fish treat for parasites and drop it in my display. if your fish are healthy they wont get sick, thats what there slime coat is for.
I see your point though if you buy a sick fish you should qt.
if you lost 80% of your fish something else in the tank was stressing the other fish before the sick fish was added. maybe a larger fish picking on a smaller one, chemical change......
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