Need more info on grow, more info you provide better we can assist. Looks a tad hungry for Nitrogen. You feeding? What soil light, ph temp humidity.etc etc more the better!
Looks like you've had a slight bout with over watering as well, yet your watering method itself is faulty.
A pot shouldn't be half wet and half dry. Water to saturation, let dry out. I'd bet two days to dry out given the plant size and pot size, but that is a guess. You're the only one there to lift the pot to confirm.
BCN critical mass xxl
Coco and perlite. Running a 600w hps light with ballast at 400w. About 45-55% humidity. Feeding flora triple series with calmag and feeding water ph is at around 6. Temps are between 25-30°c.
Your plants look good.
You might consider feeding every day.......I feed once a day in veg and twice a day in flower.
Here's a feeding chart published by www.cocoforcannabis.com that you might find helpful.......it uses GH 3 part Flora Series.