ok so a little update. as i said a couple of weeks ago im growing half plants in soil and the other half in my flood and drain system. the plants in the hydro system are not even half the size of the plants in the soil and look shitty. i was reading a maximum yield magazine and it explained what each nutrient does and when there is a lack of a nutrient how the plant is affected and how it looks. stunted growth, yellowish leaves. purple or red stems. all these are signs of my plants so im assuming they are lacking a ton of nutrients. im not sure if i should have been giving the plants in the hydro system nutrients sooner because i know that rockwool does not have any nutritional value to plants whatsoever. I did read that soil alone has a lot of nutrients that are essential for a plant to grow. So in conclusion i think the my plants need more nutrients. Im really pissed becuase i thought the hydro plants would be growing faster than the soil plants. hopefully they catch up.