@I'm just n old stoner47
Hi Friend, I was just wondering which color temp/kelvin did you go with on the fluorescent light bulbs that you are using?
I find that 6500k bulbs emit too much blue, which can lead to stretching in seedlings, I would choose something around 4000k-5000k for vegging w/ flouros, but also I wouldn't use fluorescent entirely by itself for seedlings, I use anywhere from 7-40 watt incandescent bulbs to supplement extra light into my seedling/clone cabinet, really helps them grow a stronger stem and the added Red light really can help balance the leaf nodes and produce a tighter stacking seedling/seedlings and enhance their chances of survival, I've noticed enhanced growth from using a mixture of fluorescent bulbs 2700-5000k bulbs and added a 60watt incandescent, I noticed faster growth on intermediate sized plants also, better than the growth I saw using fluorescent by itself.
I fancy the 4100k bulbs personally for younger plants and seedlings, not to warm, not too cool, kind of inbetween and the plants can be kept closer proximity to the light because of lessened blue light and added green found in the 4100k, blue light can bombard your plants and interfere with achieving a balanced spectrum, blue light traveling at higher frequency can overwhelm
the photorecepters within the plants leaves, causing elongation and smaller leaves and fragility to the plant.
Red light is what you need add to the spectrum of mostly blue and green light, both red and far red are necessary for optimal seed germination, seeds still germinate without it, but it is not optimized to have low light conditions around lifeforms who's over 90-95% of their energy is accumulated through the abundance of light they are given, they don't survive without light, so why on earth would allowing their source of light to be disrupted at a seedlings earliest stage, be ideal? It isn't and never will be.
Mostly just wanted to reach out and help you understand why your seedling growth is not ideal or close to it so far, and the reason I am seeing impaired growth is because just too much blue, not enough red, 2700k fluorescent can help balance the spectrum some, but I've found that incandescent having 100% cri produces better results than using nothing but fluorescent does, over abundance of nothing but fluorescent light can cause over saturation of UV light also and cause stunted growth in young plants also, so it's better to have a mixture of light instead of one sole technology that is supposedly more advanced than the other age old technology's, a seedlings need for delicate/gentle balanced lighting is not going away, it is imperative that we understand the roles that each end of the color spectrum play during the lifespan of a plant to reach further towards an ideal growing environment that we all hope to achieve in order to produce adequate and potent medicine that most of us home growers strive for.
Here is a link that might be helpful.
Hypocotyl phototropism of etiolated Arabidopsis seedlings is primarily mediated by the blue-light receptor kinase phototropin 1 (phot1). Phot1-mediated curva...
www.frontiersin.org
Cheers.