First time

the middle of my plant is getting kind of discolored I wouldn’t call it yellow but a different kind of green. Is this normal? I haven’t introduced any nuts yet since my soil is pretty rich (fox farm). But because of the burnt tips I was thinking nut burn. Also was thinking possibly ph. Any ideas or input?

Hello fellow friends, I am a new grower looking for some insight on my plant and my grow tent setup. It's coming to the third week since it sprouted and I believe it is not growing as fast as it should. My setup is: - 60x60x160 cm tent - soil is a mix of coco and perlite (pH 6.8) - seed strain Moby Dick - light is a 150W LED light, distance from plant 15-20 cm, light cycle 20/4 and I have 2 of the 3 bulbs on at half intensity for now Link to the LED light: My temperatures and RH shift...