I figured i would share my DIY overflow project. I started with 4 pieces of 1/4 acrylic. The pieces are 6" x 30" Tall. I have a buddy who works with a CNC Machine. Here are some pics.
I had the tank drilled in the back of the tank. The bottom is tempered. I had 2-1" drains and 2-3/4" returns drilled. I plumbed everything up and siliconed the overflows in .
What suggestions do you have then? I looked to buy the Mega flow kit that but they do not sell the overflow itself. Powerheads will have to move detirus of the bottom.