So much misinformation in this thread... where to begin.
First, you should always quarantine new fish, like a couple of the posts pointed out.
Second, putting a quarter-sized discus in with 3" discus is asking for the smallest to become an immediate omega and it will spend the majority of its time hiding from the others, not getting enough to eat and winding up stunted...kinder to euth. it now.
"calm down
+1, very peaceful unless breeding, or 1 female and 2 males(all adults)" wha...? where did this come from?
QT should be for 30 days, not a week or two. If no symptoms of disease present themselves, ok. If a disease shows, treat til symptoms disappear or prescribed antibiotic course is completed, then reset the 30-day clock.
Mark
First, you should always quarantine new fish, like a couple of the posts pointed out.
Second, putting a quarter-sized discus in with 3" discus is asking for the smallest to become an immediate omega and it will spend the majority of its time hiding from the others, not getting enough to eat and winding up stunted...kinder to euth. it now.
"calm down

+1, very peaceful unless breeding, or 1 female and 2 males(all adults)" wha...? where did this come from?
QT should be for 30 days, not a week or two. If no symptoms of disease present themselves, ok. If a disease shows, treat til symptoms disappear or prescribed antibiotic course is completed, then reset the 30-day clock.
Mark