Does anyone know why the top growth is gone lighter green

[Putthataway]

11 seconds is my favorite.

 

[TheGoldenRoad]

Literally looks perfect

Agreed

 

[hazegod666]

Magnesium darkens leaves deficiency in nitrogen aswell

 

[Chrism]

I'm happy now heard your comments my first ever grow been so stressful at start but hopefully it's gunna all work out ok

 

[Chrism]

Me phone made this cool video of the journey and torment these plants have been through (first ever grow) happy they have made it this far hahha

 

[LoveGrowingIt]

I've got it on 400w should I turn it down

Watch the leaves for signs of light stress. If you're not sure, post a close-up picture. Your plants look good, though. The new growth as they start to flower is usually a lighter, greenish-yellow color.

I was gunna order a lux meter today I can't afford a par meter spent far to much on this grow already is it waste of time says it works on LEDs

You could try the Photone phone app. It's free to download, but a special filter for the phone camera might be needed. I bought one. It cost about $30. The app does several measurements, including PAR and DLI.

 

[DJEDiMIND]

Mine show this as well. The 2 biggest are White widow auto, and Grape diesel photoperiod sativa. The small one is ww auto too.

 

[Crazyformes]

Great job for first grow