First grow, 6-8 weeks in, having some problems - please help

[CrimsonBlitz]

Hi and thank you for dropping in. This is my first grow and is more so of a practice grow to get an idea how to grow cannabis. The plant was growing strong and healthy without any dying leaves up to the 5th week till I had to leave for a week long vacation, when I returned about 6 leaves had died and the plant had started to preflower on every branch with full 24 hour light, (i thought cannabis does not preflower till 12/12?) the roots had gotten root bound in the quarter gallon pot so I transplanted into a 2 gallon pot the 6th week. Every day since I returned the bottom leaves on every branch have been slowly yellowing and dying, I'm having trouble pinpointing the source of the problem, the soil I added to the 2 gal pot was .022% N Miracle grow brand from Home Depot (not the best I know) but I did not have a problem with the soil early on in the grow room. Temp is 78F ph is 7. The plant is in a closet without any fans door closed 12 hours a day. I decided to scrog once I came back, lights are still on for full 24 hours 3800 lumen per cfl 2500k Any help or thoughts would be greatly appreciated. Thank you.

 

[CrimsonBlitz]

I forgot to mention I have not fertilized in the past 2 weeks, I figured the high nitrogen content in the transplanted soil was enough without additional fertilizer

 

[cannasensei]

Was someone watering them for you while u were gone? Almost looks like they're overwatered.

As for the flowers, a pistil here and there at the nodes is fairly normal on a mature plant however it appears you have a full blown autoflower there.

 

[CrimsonBlitz]

How can you tell if a plants being over watered?

 

[CrimsonBlitz]

That's a funny story actually, I took 2 1 gallon water jugs with a string running from the jug to the soil, it was definately over watered when I returned. would the effects last for 2-3 weeks? I guess I could still be over watering. Makes sense, thank you.

 

[WizHigh]

wow 2 gallons of water? Thats way to much. The size of the pot looks like it would only need 1 water bottle of 500ml of water and shell be fine. As long as she is in that size pot thats all she needs. Also your having a huge phosphorus deficiency all that purpling and blue spots on the leaves is a forsure sign. Way to much bloom nutes. Hopefully the over watering rinsed the extra phosphorus out. Your good on Nitrogen though.

 

[Gadfly]

To avoid your plants from becoming root bound plan accordingly. The general rule is 1 gallon to every foot/month of growth. If I figure that I need about 3 months for my grow I want at least a 3 gallon pot.

As for the miracle grow, your going to have a headache because of those time released nutrients. You'll notice on most MG packaging they advertise "feeds plants up the 3 months." This is because they pack their soils with time released nutrients that make your job of determining whats needed or not needed all that much harder--you may not have added anything for 2 weeks but your soil is releasing stuff periodically. If MG is the only thing available I would look for their organic line or at least something w/out that time released crap in it for the future.

Another thing to consider is that having a PH of 7 is right on the border of being acceptable. I shoot for 6.8 in soil because most meters have a small margin of error and this helps keep me in the nutrient happy place.

Most plants can recover from over watering within a few days once the situation is corrected.