Too many mixed problems(with pics)

Hey guys
This is my first grow and I'm really enjoying this new hobby of mine thanks to all info on this forum. I have a girl and she is my greatest purpose on life recently. I planted her about 4-5 months ago. At first i did not have any lights but then i decided to buy some cfls and made a grow box myself. The plant was doing ok but three weeks ago, the leaves in the bottom started to turn yellow and fall. I read about it and thought it is nitrogen def. But when her middle leaves become dark green and started to curl producing a "claw" i looked it up again and it says nitrogen toxicity. Even though i wasn't giving any extra nutes, i flushed it and the problem is still there. And the worst part is that the plant never grows anymore. The top cola is starting to get dry and crispy like its burned. and the new leaves grow like small and dried. Please help me i don't want it dying.

What Strain is it? Bag Seed
Is it Indica, Sativa or Hybrid? What percentages? I don't know
How Many Plants? 1
Is it in Vegetative or Flowering Stage? Flowering
If in Vegetative Stage... How Long? 8 weeks
Indoor or Outdoor? Indoor
Soil or Hydro? Soil
If Soil... What is in your Mix? Some turf i bought from store
If Soil... What Size Pot? Dont know exactly but it is small bc i don't have too much space
Size (Wattage) of Light? How Many? 4 26w cfl 2700k
Is it Air Cooled? Yes
Temperature of Room/Cabinet? 80F ave
PH of Medium or Reservoir? I don't have a PH meter so i do not know this too
Any Pests? Not that I'm aware of
How Often are you Watering? every 2-3 days
Type and Strength of Fertilizers used? None

You probably are rootbound.
A Plant of that age should be in a 3/5 gallon pot !

Re plant it into potting soil/seedling soil and a much bigger plant pot & continue to water every 2-3 days with no nutrients

How about a copper (Cu) deficiency due to poor soil conditions?

Not enough light + Needs to be replanted.....
she should be in at least a 5-7gallon container...
the light can't penetrate to the bottom- so those leaves die and drop--
She is starving cuz you do not feed her (what "Stuff" from the store is she planted in!?) AND is most likely root-bound....

Fixable!!! But You want to use good soil and proper nutes according to a feeding schedule...
Get some Miracle Grow Organic Choice if it is the only "good" soil you can get and a cheapo Plastic tree pot (7 gallon) and replant her... water her in really well... then get some nutes....!

yep needs a much bigger pot, but since it's already flowering you may be fizzucked. grap any pot thats about 2x bigger than the plant you see above the soil line, and thats about what youll be stuck with.

if you grow dope in a teacup youre gonna get tiny plants.

protip: the size of the plant above the soil is roughly equal to the root system size. if you would have a hard time stuffing the foliage into your pot, then your roots are crammed in real tight.

you could transplant that little thing into a 1 gallon milk jusg with the top cut off and some holes in the bottom and get decent results.

if/when you re-pot it, DONT fertilize, your new soil will have nutrients and this will make your roots spread. also, thin out the lower leaves to get some air moving down in the undergrowth. snip all the mostly yellow leafs and discard them


EDIT: and dont believe the garbage you hear about Miracle Grow being shit. it works good, if you use it right, it's the noob's friend

Thanks for all replies. As for the pot, you are right but since I do not have enough room for a 7 gallon pot and really tall plant, I won't go that big but I am definitely gonna replant her. I will inform you about the results.