dear guys ,

currently i have 2 tubing coming out from the same source of co2 tank. the question , how to effectively place my 2 co2 outlets inside the tank ?

(*****imagine the 4 corners of the tank*1-------2*****)
(*******************************3------4******)

is it true that by placing at 1 and 4 or 2 and 3 is the most effective (alternate rows corner)?
cos i find placing at 1 and 2 is not effective. reason: i dont see bubbles flowing to the plant at the row 3,4