You can help me

[A87805959]

Sorry, I would like to ask a few questions !!!
1 I started training three weeks ago, why some seedlings will grow slowly?
2 Many seedling foliage yellow, greenish veins, leaves whitish, how could this be?

Time: three to four weeks
Variety: White Widow
Soil PH: 6.8
Watering Water PH: 5.5
Temperature: 27 ° C
The level of brightness: 300
Lighting: LED 200W
Lights Time: 24/0

You can help me?
Thank you !!! ：圓的愛：

 

[theengineer]

sounds like your light is too close and you're bleaching the plant.

 

[go4snypr]

i would suggest the ph of your water should be closer to that of the soil as well to prevent ph swings. also have you given them any nutrients?? pictures would also be great.