I've used coffee filters in nesting glass bowls, but since I made very-fast-draining seed starting mix, I've gotten good results sprouting in trays. Now, over-wateirng doesn't guarantee damping off.
I use the 72-cells-per-tray where 6-packs of cells can be torn off (easy to move some packs to another tray or outside, and very easy to turn a 6-pak upside down and pop out the root balls.
For smaller, slower seeds, I use a 128-cell "plug tray". This year, I learned the obvious: AS SOON AS a seedling in a 128-cell looks healthy and strudy, pot it up, even if you would rather wait and put it directly into the soil. If the seedling is happy today, it will be root-bound and dieing a few days from now.
Or start them in twice as many plug trays, but 50 cells per tray instead of 128.
I wish I could find deeper plug trays and inserts!
Corey
