Beetroot and Tomato Seedlings
I'm a relatively new gardener and I've been increasing my range over the last couple of years. This year I decided to make an early start and germinate some seeds indoors. I got myself a little heat mat and a a 100W light. For the most part things have gone quite well so far. I have healthy looking peas, sweet peas, china asters, parsley, basil, chilies, and cornflowers. I've been hardening them off (except the chillies) over the last week or so, and the first of the peas are already in the garden. However I do have a couple of problems that I'd be really grateful for some advice with:
Firstly, my beetroot seeds have mostly gone floppy and died, one after the other. I sowed them nearly three weeks ago in pressed peat modules. They did alright at first and had their first true leaves. I then put them into small clay pots to give them a bit more space, and snipped out all but one per pot, around a week ago. I put them in a 50/50 mix of purchased soil and compost (I live in Switzerland and the range of specialist soils and composts is nothing like it is in the UK) with a sprinkle of granular organic fertiliser. But then they just started keeling over one after the other. The stems go floppy where they meet the soil, the seed leaves go droopy and the true leaves curl. Any one have any idea why?
Secondly, my tomatoes (varieties are Auriga, Black Cherry and Green Zebra) have been treated similarly to the beetroot and have been going a little longer. They're generally looking not too bad, with thick hairy stems and they have quite a few leaves, but the older (true) leaves have started to go a little grey and droopy. I planted them in the same sort of mixture as the beetroot but with a little peat added as I read that they like acid. Since they've gone grey, I've tried a dilute application of an organic liquid fertiliser (6-12-10) but nothing much changed. I've had success with tomatoes before where I've bought them or been given them as plants, but never tried them as seeds before. Again, any advice would be very much appreciated.