Lighting Question

Shop light with two fluro tubes. Ive got them about... 4 inchest above my little guys. Just curious... Is fluro lighting healthy for the plants?

And another question... Yellowing of some of the leaves... That means, not enough N, P, or K? Any answers / tips help out.

fluro is ok for veg id probabily go with 4 tubes tho and yellow leaves N how are you/what are you feeding

and how old are they

Like all flourescent lighting...you need to have them close to the plants 1-3"...and have alot of them...i currently have 3 plants, with 7 clones under 4-4ft double strip fixtures, and i'm still going to get 2 more...for a total of 12 lights...flouro's are actually not bad to use for flowering, you will have to get the right mixture of colour. Test's have shown that while the yield is smaller, tricome development is increased. Personally i use a 400W HPS and i will be adding the fluro's as side lighting this time, should notice the difference.

https://www.rollitup.org/grow-room-design-setup/84592-diy-fluro-overdrive.html
if you wanna get more intensity with the same amount of bulbs it does eat the life of the bulb a bit but its about 180% intensity

How old? - Sprouted roughly 2 weeks ago. They are all about 4 inches tall with the light fixture about 2-3 inches above all the plants.
What am I feeding them? - Currently the nutrients are only from the soil. I do have Grow / Bloom / Micro from advanced Nutrients for when they get bigger.
I do plan to get more fixtures because it is seeming like its just not enough light for them. I dont have my camera up yet. That would help. Got another day before I get a USB cable from a friend. Right now I got 6 pots sitting under the fixture. And plan to get Clones going. So Im definately gonna need 2 or so more fixtures. Thanks for the Tips dudes.