I have ordered the acrylic for the new sump build translucent orange and white won the poll. Acrylic baffles will be 1/4" thick.
Overflow will fall into a bubble tower followed by 4 - 4 inches socks then to my skimmer section through 2 8X4X4 marine pur blocks and back to the return pump. Ato section will be able to hold 16.5 gallons