This is a rack i sketched up to start advancing my collection. I'm using Sterilite tubs. The bottom fit's three 28 quart tubs, the middle fits four 16 quart tubs, and the top fits six 6 quart tubs. All of the cubicles have correct height to prevent escapes and a little room on each side of the tubs so they're not jammed in there. Let me know if you think this would be a good setup or if i should try a different style. Also what size flexwatt should i use for each size tub? (i'm opting for underbelly heating) I'm also going to change the inside dividers so as the don't rest on the flexwatt.