Suggestion: water into your medium and see if the leaves improve. I've had some issues like this from foliar feeding too. Still not sure what I did wrong. The water was pH'd and everything but it still came out like that.
You should water heavily until water runs out the bottom and then let them dry out completely b4 watering again. Watering once a day in dirt will make the roots stay wet, get water logged and rot. Roots like to breathe, let them dry out between watering and get some air.
Get ready to up pot. If you’re using preamended soil that should have enough nutrients for the remaining veg. If coco, up pot and feed immediately. Need more light for flowering. Plants look good thus far.
Also if you’re in soil, do some research on wet/dry cycle for soil. Very important like trip said above.