yes thats exactly what I was looking for. I also thinking of just getting some bigger rubbermaid totes and maybe doing like 4-6 totes with 3 res. 1 res for 2 totes. Maybe try different nutes in each, do separate test to find what works best for me, but thats just one of many ideas that run through my head when I think about growing my 2nd crop. I'm not to sure just trying to get a lot of ideas before I starting throwing money down for a bigger system.