Posted: 21/03/2013 at 18:21
The level of light has not been mentioned; once the plants push through the soil they need light. I have this vision of a gloomy dining room with heating on... and the furry stuff would thrive.
I tend to water from the base, stand seed tray with perforated base in solid seed tray and pour water into base: no water gets onto the plants.
Perhaps you are not taking the cling film off soon enough? Perhaps they are 'damping off'?
Perhaps some photos would help? I must confess I haven't planted any seeds yet; I'm waiting for just a little warmth in the air.