In week 4 I planted the plants in a richly fertili...

Hello You should just water once or twice in clean water by adjusting your ph to the rate you want This will allow you to regulate the nutrient saturation of your substrate Good luck for your grow🌱 May the force be with you 💪

When working with organic nutrition you should use a bio-filter, then it should be no big problem. Without it could be a problem. As BOSSANOVA said it is an option to feed one time from above with some grow-nutrition to provide proper nitrogen-nutes. But take care of dosage, my el patrons got way too much of organic growth-nutrition, lead to burned tips for me.

The yellowing leaves I can see are just ones that aren't getting enough light, so they will go first. You can still do a top dress with blood/fish/bone if you don't want to add any liquid nutes.

Hi as all of your plants have that yellowing . Its a tricky situation. At the first sight girls look fine and i just thought its alightburn. then i watched closer ... and its still tricky to see in the pictures. but iam going with that what you tell us. I would feed them per hand and go with 2-4 percent Nitrogen . This are so heavy growing Girls and they need some food. But not too much.....Iam sure you as an experienced grower find out whats going on.