My first thought was in agreement with Pitluvs, if the bettas are all happy and healthy then let them be and hopefully theyll stay that way.
Then the thought of them going home with someone and theyre newly purchased betta box makes me want to save them all, -sigh- theres no winning with these fish lol
But I have to agree with everyone else, bettas are an addiction, theres no way your getting talked out of another one here. I have one (and have managed to keep it that way only by telling myself i'm not allowed to have another one until the fin rot Ryu came home with is completely gone), but after coming to this forum i cant help stopping and looking at them everytime im in the pet store and picking out the one i want.
peace. love. & bettas.