Roots are turning brown

A question from a fellow grower:

I have 6 white widow plants in about their 3rd week and now the roots are turning brown. The tops are showing no signs of wilting or yellowing. I’ve been using the technaflora starter kit and their recipe for success. The kit came with the grow cabinet. I just changed the nutrients Sunday. Any suggestions?

Did you check ph , ppm , fill out a support ticket .

Agree with Yoshi, need more info. Include your watering schedule as watering too much or too little can effect your plants.