I I have A grow light over my tomatoes and mine aren't doing very well I leave it on all night I tort they speed the gelation up can anybody give me some advise please

What exactly is worrying you about them? Germination refers to the seeds first putting out shoots and roots - do you mean that they aren't doing this or that they have sprouted but aren't doing well? Hurrying plants isn't always a good idea as they can grow tall and weak instead of sturdy and strong. Keep them in a good light place once they have appeared and don't leave your lights on at night. If you have a south facing window they should not need grow lights at this time of year.

Hi, where have you got the seeds ? if they're just in a seed tray in a cold greenhouse they wont germinate, they need a constant temperature of 64 - 68f, keep the compost moist but not wet, you don't actually need grow lights for seeds to germinate, so you're wasting electricity keeping it on all night, temperature is more important at the seed stage, once they've germinated, and are large enough to prick out, then if you wish, you can use the grow light, but it's not really needed, an ideal temperature for tomatoes is between 55 and 75f, below 50 and they stop growing, and also above 80, if they get down to 40f they start to turn blue, {with cold}, when I grow them, I never grow them from seed, it's too expensive keeping them warm, I just buy a dozen or so plants from a local grower, for about £1.20 each, they should be planted in the greenhouse border, which has been well manured, and staggered, {depending on the width of the border} so that they're about 20 - 24" apart, and insert the canes when you plant them, Derek.

OK thanks for the information