Anyone have a write up for one of these or willing to do one or atleast some general plans? It's what I'm planning on building someday here when I have some free time. But I'm not sure what materials to use for spacers and runners.. I wanted to do one 5 tubs per level and 8 levels high for a total of 40 tubs. I've seen videos and stuff of people who have them like ralph davis and justin kobylka(i think?) and they seem like the best option.

Thanks in advance!

Greg