Identification & General Help

Recently started to grow some plants from ordinary street seeds and don't know what kind of plants they are. Seeds from two different plants are used.

These pictures are taken during the first week of vegetative growth (approximately 22 days after sprouting and 6 days after the first five-bladed leaves appeared).

The root medium is a mix of potting soil, perlite, styrofoam (didn't have more perlite!). The containers are about 2-3 gallons and is watered once (throughly) since transplanting which was 17 days ago! The surface is bone dry and is cracked open from the sides. The bottom of the container is still moist--about 4-5 out of 10 according to cheap soil moisture meter--the middle part moisture reads 3-4 on the meter.

Ordinary compact fluorescent light bulbs all supposedly at 6400K are used. Lights are arranged in order to achieve 30-60watt per 30cm2 (1 f2). Trying to keep the bulbs 4-5cm from the plants.

Temperature was between 25-29 centigrade degrees and a small ventilator is kept running after the transplanting. Relative humidity level was around 65% and gradually decreased to 50%. The room (1m2 area-2.5m high, two levels) has an intake and exhaust fan which run for 15 minutes several times a day (they're too small and set ineffectively that i suspect they only help to lower the humidity, no cooling effect whatsoever...).

Some of the plants have wilted a bit as you see in the pictures, i don't know if it's because of dehydration since not all of them are wilted and the soil still has some moisture. One of the plants has yellowly fainted areas which according to my humble research adresses to nitrogen defficiency but why only that one? Also, there are several plants which have curled or kind of deformed leaves...

Any comments and/or answers will be appriciated.

Thanks.

Those look like very healthy plants to me. The moisture meter is good to have but I like to pick up my pots if I'm ever unsure. Dry soil ways next to nothing. If it feels like you're picking up an empty pot then you need to water. If you lift them every day you'll start to get a feel for how the weight changes. They'll be really heavy right after watering. Keep an eye on the yellowing and give a general purpose nute at 1/4 label strength when it starts to spread. But overall, as I said they look awesome. Better than my seedlings and I've been growing for a little while now.

Here are some more photos.

Thanks a lot mared.