Nero 3 placements help corals not filling opening

[Fredrxn]

Hello guys in I am not sure where to place my two Nero’s 3 in my jbj 65 3 foot tank…lps not fully opening…..what do u guys think?my return pump puts out 500 gph do I even need the Nero’s in the tank? Here a picture of placements of Nero 3s.. thanks

 

[Fredrxn]

Bump