Plant tips pointing down/ side shoots r a light lime green....pics

please can anyone help me on these issues..Why are the tips on my leaves pointing down?...Other problem is the plants side shoots are a lighter green than the fan leaves and top new growths..can anyone help me with a solution to my problems ..thanks

1.if you look close at the pic u can see the light lime green side shoot..the the top of the plnt is darker green like the fan leaves..

hi. what lights are you using and how far away form the plants are they? any idea on the temps in your grow room and the ph?

Are you in flower? Temps? Nutrient regimen? Heat stress and an excess of nitrogen will do that.

what about salt buildup? will that cause that?

the plants r 3 weeks into veg..

1.lights r T5 (4 footer with 8 lights) they r 24 inches away from the tops of the plants
2.temps 80 to 84
3.humidity is 47%-50%
4.1100 ppm on the nutrients..R/O water with ADDED CAL/MAG
5.ph 6.8