Yes sometimes takes mine a week or more if cooler, or I put a bit too much water in the containers.

Hey Bellatrix,

I've never set the seeds in the sun myself -- I keep them in a workroom, porch or garage. But yes, too much water slows the fermentation process down a bit.

Here are two great links with tomato seed saving info:

http://home.gwi.net/~troberts/farm/seedsaving/index.html

http://www.victoryseeds.com/information/seedsave_tomato.html

tomatoe seed saving - looking for suggestions on how to do it correctly? this is my first year to try. specifically I have Green Zebra tomatoes, but also 7 other varieties.