This will be my first attempt to check if my grow light works. I use coir pellets witch provide a lot of substrate and as seed I use salad burnet herb. I took these because of there size.
A small plastic Tupperware will work as a peel for my vegetables. With the addition of water, the pellets swell up. I press the earth over the seeds and put the whole thing under the light. Now I have to wait if it works or not. I also added a thermometer to check if it’s not to cold in my workshop.