The 7 Quarts tubs available in stores http://www.walmart.com/ip/Sterilite-...of-14/15524838
15 Quarts for large clutches http://www.walmart.com/ip/Sterilite-...of-10/20699636 only have a handful of those, fit great with the 7 quart as they are the same height
This incubator fit (30) 7 Quarts Tubs or 10 (7 Quarts) and 10 (15 Quarts)
I prepare my egg box as followed for optimal humidity and minimum condensation
7 Quarts tub
6 Cups of vermiculite
4 cups of water
Light diffuser
89 Incubation temp
No holes - no press and seal