can anyone tell me what this is and how to fix it please?
Not necessary. Your plants look fine. The lower leaves of a cannabis plant typically yellow and fall off as the plant ages.
Welcome to the forum.
Hey @Halfmoon , Welcome to the forum.
Midwest guy is correct.
Perhaps this article would help in the future as well.
Just FYI the part about normal yellowing is at the end of the article.
thank you guys
welcome to the community