I would to know why the smaller plant is very slow like this. She's still in preflowering stage, There is something I can do ? I put some nutes of pre flowering stage today in my water. I have pistils but it stay on this stage from few days.
Don't rush things. It could just be a different pheno that takes longer. You can easily burn or stunt her by overdoing the nutrients. Give her some time and maybe even ph'd water and she'll have started to show you what's going on. I honestly believe it could be a different pheno. 👊