My Setup

[GpsFrontier]

I could be wrong but I think ohman11 was thinking that with 15 plants in the same amount of space, they may be to close together to really grow into full size plants. I was thinking the same thing, but not clear if you planed 15 sites in one tote, or if you planed to use two totes for the 15 sites. Also I don't know how big the plants you intend to grow will need will get.