Water Movement

[TAZ]

Hi all,

Might seem like a dumb question, but I was wondering what is the best way to determine that you have good water movement in your tank. Is there an ideal placement for pumps, to get the best water movement?

I am currently running a 65 Gallon tank and have two pumps moving the water. Each one is placed on opposite sides of the tank, and they are set at different heights.

Also, do people have a preference in the type of pump they are using?