Hi guys,
I’m a newer hobbyist and have a question. Currently have 2 tanks a 9 gallon and a 32 gallon display . I want to transfer the fish from 9 gallon some cardinal tetras( 4)some aru2 (4) , and a bristle nose pleco to the display . If I transfer them should I do 2-4 fish at a time or will I be ok to move everyone at once .