Hey Half dawg, I just wanted to say thank you for the post and the design ideas. I am currently in the process of buying the materials. It's gonna take me a little while as I am on a bit of a tight budget. I just picked up two of the melamine boards today. Baby Step #1 taken. lol!! At any rate, I will be using 28qt. tubs for the top two levels, and 41qt. tubs for the other three levels. Thanks again, for the info and helpful ideas.