Looking good
@flyboy1256 !
They're just starting flowering, so will probably make a big jump in growth, stretch out and up, in the next couple of weeks.
Not sure about the lighter colored leaf tips. Can't be nutrient burn, because you haven't used any.
Though usually the growth tip of the plants are lighter in color. I wouldn't worry about it, but keep us updated if any changes.
One thought I did have, which could help a lot -- some kind of reflector for your lights.
Because you don't have a reflector, prob over 50% of the light is going up and not on your plants.
If you can buy or make some kind of reflector behind then, you can increase light onto the plants' leaves.
As they start flowering, and finish off their structure, that light is really critical.
You could do individual reflectors for each little light, or just a big kind of dome shape thing for the whole lot.
Try to use reflective material, or white. But something that diffuses the light.
You can prob find some white card plastic from a stationary shop.
Or, something I've thought of myself, buy one of those sunshade for a car windscreen, which has the silver reflecting material inside it.
Could easily cut one of those down and shape it with tape. I think they're usually fairly cheap.
You may need to start the bloom fertilizers soonish. Start fairly weak, maybe 1/4 strength, and slowly build up.