Posted: 23/05/2013 at 17:51
You could also invest in a solar heater - or a gas one, but the reality is tou don't need it. Just keeping the frost and wind off the seed trays will be a huge help, use a cover in there and they will romp away. Horticulatural fleece is very useful - or old net curtains if you have some.
No such thing as a silly question, all are interesting and useful to someone.