First off, welcome! This site is great for new comers, new growers. The OG growers are absolutely great, though some have a tendency of biting. You've been warned. Lol Other than that read up, ask questions and grow your little heart out!
One quest for you. What are they growing in? Looks like muddy clay mix. Looks thick, like not much air getting to the root zone.
Whats your story? You growing indoors or outdoors? Whats your water feed schedule? PH been checked recently? Root zone ph? If indoors, what kind of light you running? What kind of plants?
Help us help you.