Powerhead question

[SLoViper]

So i have a 120 gallon community tank with 2 plecos, 1 columbian shark, 2 angelfish, 1 gourami, 4 dollars, a redtail shark,2 mollies and a female betta and 2 clown loaches. My setup is running on 2 fluval 306 filters and i am wondering if i need a powerhead fo better circulation or my filters provide a good enough circulation around the tank?
Thanks

 

[Terrance]

If you look at your water and you feel like the circulation is week, then add a powerhead. I would rather add a circulation pump, such as one of the Koralia brands. I fear fish getting sucked into the powerhead and the path of the powerhead is very straight. The Koralia powerheads are more widespeard, uses less electricity, and fish does not get sucked in easily.