Whats wrong with this little girl?

[vincenoir]

Hello. I've got two yellowy plants about 3 weeks old. There is another plants in the same room but the others has no problem. These plants are different strains from the other. Also I use a different soil too (Plagran Royal mix). This is the first time I use this soil. I applied something different to the soil. I washed the soil before I placed the seeds on it. There was a warn about washing on the package. Something like "you should wash it before use". Soil not dried about 15 days because of high humidty on the room. I give it them regular water without any additive or fertilizer. So here is the picture of one of them. There is a little yellow lines all over the plant. I thought maybe its because of too much washing of soil or any kind of deficiency nutri or magnesium. I need your opinions.

[Mr.furley]

First thing is your containers.
roots don't like light so need to get them out the clear plastic soon, do you have drainage holes? What's your PH?
if that stuff checks out and even if it doesn't you are going to need to feed them soon if there is no nutrition in your medium.

[Mr.furley]

Straight from the website
"Plagron Royalmix is a ready to use soilless growing medium for potting and re-potting all flowering plants. Rinse with water before use in order to wash out the immediately absorbable nutrients. Extra nutrition is needed after approximately 6 weeks, depending on the condition of the plant. "

A soilless medium does not contain nutrient and is made of things like coconut husk(coco coir), Moss, perlite, vermiculite. It it treated like a hydroponic grow in a pot. You get the feeling of growing in soil but the plant is treated like hydro.

https://www.growweedeasy.com/whats-the-best-cannabis-growing-medium#soilless-mix-coco-coir-perlite

[vincenoir]

I didnt know this product is different from regular soil. I'm going to feed them as needed after now. Now there is a new situation for me. I got some other plants started with Biobizz Light mix. I was planing repotting them with Plagran Royalmix. Is it proper or should I use regular soil type for repotting? Is it too hard to control feeding schledule If I mix these mediums.

[Mr.furley]

It will be your choice on your grow medium I personally like the soilless medium, the first thing you need to do is to make sure you are in the proper PH range or no matter what you give them it won't be absorb properly.

Soilless/hydro 5.5 to 6.5. I like to drift between 5.7 and 6.3

Soil 6.0 to 7.0. You are at 7 with is on the high side even for soil.

[Mr.furley]