Slow going with this winter weather but nice progress with the roots. Slight increase in nutrient strength this week. I aim to be at full nutrient strength in 2 weeks time.
Mate you need to switch on both the red and blue spectrum.
Plants react to blue light in a way that makes them think its very intense light they are under so they dont stretch as if you would have applied more red light.
If you wonder why your plants arent growing very tall, then thats why.
If you want them to stretch alot, then you should apply light from the 650 nm spectrum and up - Infrared and basic far red light is good for making plants stretch tall.
Happy growing 😎
Heres a video about blue light that told me everything i needed to know; www.youtube.com/watch