Leaves curling only on top

How big are the pots? After being root bound for some time they stressed just like these.

There's a couple things that could be going on. Over Watered, soil toxicity or the lights are to close. I'd flush the soil with 6.7 ph water until the ppm are below 500 then give it a mild nutrient solution. That's just what I would do. These light recommendations are set for perfect conditions, CO2 addition perfect humidity, you get where I'm going with this. I'd lift the light to at least 3 ft above the canopy.

seems needs more water

Do they remain the same in the morning/day/evening? My plants are usually a bit tired in the end of the day and look the same.

You are feeding too much nitrogen and looks like a watering issue as well. Flowering NPK ratio is 1-2-3. They don't need much nitrogen in flowering.

You're giving your plant too much nitrogen at this point in it's life and are hovering on the edge of a nitrogen toxicity which will bring on a calcium deficiency soon. Bio Grow should be vastly reduced at this point and you should be providing her with Bio Bloom since she's in flower.... I would actually suggest, since you're growing in such a small pot and because a calcium deficiency is probably on the way, that you flush the pots out with about 3 gallons of pH'd water each and then let them dry out. When they're dry and are needing something, you can resume your nutes but cut the BioGrow and BioHeaven in half while you add the BioBloom... and keep the BioGrow at that level if not lower it even more as the plant gets older. After the first feed once you've flushed, you can resume the BioHeaven at whatever level is called for... but it should only be at 1/2 strength for that first feed. Good luck!