In this video I show my water level when the WAVEBOX is off and then on. I also thought I was going to have to drill my overflow. The water movement I am getting is insane but as hard as I tried I could not get the water to go over the edge of my tank. I think i could do it if my overflow wasn't so thirsty
. At first the wavebox looked kinda big in the corner of my tank but now I am getting used to it. Keep in mind I only have a 50 Gallon. Another reason I was so happy with this purchase is when I upgrade my tank in the future my wave box can accommodate up to a 150 Gallon.
Also Thanks for the compliments on my tank !!!!!!!
Its still under construction and when its done I will post some pics.
http://www.youtube.com/watch?v=OVRvse_sB48