He ment the color of plants are lite colored green...at lest i think....yes they r a bit green but look good to me...also depends on what kinda light u r lookingon them with..what kinda light are you using. ...Touch light?...light burn? And I feed them two bottles and I can come back in like 30 and the tray at the bottom will be holding water.
It usually means they need more N but when your plants look as healthy as that i would be hesitant to do anything crazy. I tend to keep my plants darker green but that is more of a personal preference thing.Yeah? What could that be tho? Genetics? Or something else