all 120 gallon owners 4x2x2

[i have crabs]

i have a center overflow with a vortech on each side on the back wall pointing straight,and a return from the sump pointing from the center to each front corner

[atcguy]

2 tunze 6060 in the corners pointed toward opposite corner.. Wavebox front corner looking down the tank lengthwise, a hydora at the bottom back pointed forward,. was getting a small algae buidup at one time.. all is good.. WAVEBOX is the best thing I ever bought.