First grow - nutrients and seedlings

heres pictures:
one of the seedlings, whole setup, and my diy lights (12x 40w wide spectrum)
All room surfaces lined with plastic and 1/2" stirofoam boards with reflective film glued to them. Floor has only plastic cover.

if thats a hydro setting i think that when you flush the system (i think 3 times a day for 15 min a piece) when they get to the right stage your supposed to give them nutes in the water. the plant makes its own food using the light you give it. there are some micronutrients that it will need that it cant make, but for the most part your plant uses oxygen, hydrogen (both obtained from the atmosphere) and nitrogen (with your setup im not sure where this comes from, i know its the most abundant element in the atmosphere but it is not in a usable form for plants. basically light is used by the plant to produce its own food.

The seed itself has nutrients in it to sustain the life of the seedling.

Most plant seeds (except orchids) are relatively large and contain a large store of nutrition to sustain the young plant before leaves and roots develop enough to continue sustaining the growing plant. With this type of seed, you just pop the seed in soil, water, and watch the seedling grow. Most garden plant seeds are of this type. Examples are beans, peas, corn, tomatoes and lettuce, all the seeds you see at your local nursery or produce store. Orchid seed, in comparison, is tiny, like dust. It contains virtually no nutrition to grow the new plant, so orchid seed relies on a mycorrhizal fungus to provide the nutrition required to grow. Until the young orchid grows leaves and roots large enough to support the orchid, the fungus must provide all the nutrition for the growing plant. Without this fungus, there is no possibility of the seed developing.

Growing Orchids From Seed

Vi

I recommend you give them 4-5 drops per cup of Miracle-Grow Liquid houseplant food 8-7-6.It works great.Don't use the powder,only use the liquid 8-7-6.I get mine from homedepot.

you got quiet a lot of equipment for a first time grower. I'm well basic in comparision

If you can get hold of formulex its great for seedlings. Otherwise a really weak amount of whatever grow nutes you have. I'm wouldn't recommend waiting 3 weeks in fact as soon as the 2nd set start then feed away.

The trick is small doses! As in a 1/4 of what it recommends on the tin.

Thanks for quick replies!
I've got Botanicare Pure Blend Pro Grow 3-2-4, label suggests for seedlings 1 1/2 tsp /gal
I guess i will give them just under 1/2 tsp /gal during next watering

Thats the ticket!

And remember, you wont need to increase the strength for a good couple of weeks.