puffin04;2954524; said:I actually bought a poly cattle tank that is 9 feet round and 2 and a half feet tall. What do you guys think. Im going to use my 300 gallon Rubbermaid for filtration full of live rock and skimmers. What do you guys think? I have a bat ray right now in the 300 and 3 sharks. I was thinking about the the rectangle idea building a wood one but the sharks and rays would run into the corners.
As I understand it, that is 1190 US gallons filled to the Brim, plus your 300 Gallon sump. It may not have the height of what you wanted, but I think a full circle will work a lot better for the sharks.
Lets have some photos!