If you're trying to keep every leaf green,you're gonna make yourself crazy.
Just pull the yellow leaves off, or better yet,let them fall off naturally.
Do not be tempted to increase the nutes too much. You will burn your plants and reduce yield.
Those plants have plenty of green on them...
A message to all the haters:
If you think LEDs are a rip off, then don't buy them.
If this man wants to do a micro grow using LEDs, then what's it to you?
When the government starts rationing electricity, we'll all be using LEDs...
:peace: