First time grower question

[tchatman]

Hi Guys,

New here, just have a quick question, wondering if anyone has any ideas....currently have plants (northern lights seeds), very impressed with the growth so far, but a couple of them have recently changed to a very dark green color. Is this to be expected or is there something different I need to do?

Any advice is appreciated.

 

[Caconym]

Could be a sign they're getting too much nitrogen. Or it could just be a nice healthy green.

 

[Gazoo]

Hard to say without a visual, green is good