[ContainerTed]

For years, now, I've been using the standard 72 cell flats for germination. At first pot-up, I use 9 ounce plastic cups. These fit perfectly into the square 18 cell flats (3 x 6). Main thing is that this allows me to water them from the bottom. I have always felt that this method makes for more robust root systems. Plus, the fact that I use clear plastic cups allows me to make sure nothing gets root bound.