Circulation pump placement

[jkef2010]

I have a 40g breeder tank. At the moment I have two suction cup circulation pumps where is a good place to place then on the back of the tank pointing forward or on the sides to maximize flow?

 

[vic67]

I'd place them on the sides opposing each other; toward the top and front of the tank.

 

[leocom2000]

Next to hotels, motels, night clubs ... Sorry, I could not resist. :)

 

[jkef2010]

Lol, forgot strip clubs

 

[Reefing Madness]

On each sode of the tank pointing at each other, that will kind of create some randomness when the flows hit each other.