Is Bleach episode 234 filler?
Filler Yes, episode 234 of Bleach is filler.
#234
Renji Surprised?! The Two Zabimarus
恋次驚愕！？２人の蛇尾丸
Aired 25 Aug 2009
Mochibayo compiled this list from MyAnimeList's labels, because MyAnimeList's episode data is not reaching us at the moment.