white widow,5 weeks flowering.HELP please!!!

Hi!
This is white widow.
it has gone through 1 month seedling,1 month veg,4-5 weeks flowering.

I know leaves start to yellow during flower but not like this.

I didnt top nor did i prune her.
Wich i now realise is a very stupid thing to do.

I'm gonna try and be as detailed as possible so you guys can have a better idea of what the problem is.

My equipment:
-Fox farms oceans forest and perlite soil mix.
-fox farms line of nutes.
-overdrive premium flowering nutrient.
-400hpw/mh
-mylar
-awesome temp control.(one of those big units)
-She's in a 3gallon grow bag.Wich is way too small for her.Im pretty sure she is root bound but she is just too tall and too big to transplant.
All because i was an asshole and didnt prune nor top.Learn from my mistake folks!

My readings:
-temp:75F.(temps never get above 82F.)
-Hum:36%
-PH:6.4

My observations:
-The leaftips and margins are burned.
-There are 3-5 leaves that show the problem as seen in the pics.
-Yellow spots and some leaf margins curl.
-These leaves are in the middle to lower half of the plant.
-i'm not sure about the plant growth.
-The buds look like it is still in pre-flowering...
the hairs are still completely white and as seen in the pics,the top part of the plant looks lackluster with buds.
-My other plant looks great with buds that are fattening everyday whilst the white widow shows no bud growth.Did i mention its already 4-5 weeks in flowering?

I bent the top part of my plant because it was so tall.

I have given her water for a straight week now and the problem still persist

Thanx guys!
If u guys need more info to diagnose,let me know.

Anyone know what the problem could be?

is that just a few of the lower leaves. it could just be normal. sometimes the lower fan leaves die. it seems they take the brunt of the problems. if it's only a few lower leaves and not getting worse hen i wouldn't worry.

Just a piece of advice when it comes to white widow grows in terms of nutrients they like the medium spectrum

If your spraying the leaves with water while they are under the light it could be burning the leaves. I've seen that happen before. Also maybe too much water if you watered everyday for a week. Don't drowned them.

I water once every 2-3 days.usually when the plant is starting to get droopy.
It is only a few of the leaves but it seems to be progressing.
I dont spray water on them.
Why does it look like its still in preflower?

i'm stumped. wish i could be more help.

some type of mold?
heat stress?

Looks like high PH and definitely not enough CO2

that plant looks quite sativa, i was under the impression that WW was closer to a hybrid.

is the ac blowing on the plants, the quick cold to hot can cause issues but normally it starts as spotting

in my humble opinion your ph isn't a problem, all plants especially cannabis thrive in neutrality so you want that to be as close to 7 as possible. but just to make sure that isn't the prob. you can add a touch of calcium when u water. you also have to be careful not to over feed a hybrid w/nutrients. if the problem w/the curling is just on the lower fan leaves the plant could be aborting them to focus on new growth on the top, since as you said you didn't top it. looks ok, might just need a little tlc.

Good choice with the water this week. It could be the overdrive? Maybe scale back on the nutes to 50% recommended dosage for the next water.

i'm stumped too.
I am thinking of giving her some mollasses.2 tsp per gallon.
I have a hunch that it could be potassium deficiency.
Should i do it?

My plant was doing the exact same thing, I had to move the lights up almost a foot, it was getting too hot in there, plus i had to prune her so the lower buds would get light. Someone correct me if i'm wrong, but id suggest straight water(to make sure its not nut burn), and move the lights up a tad bit, make sure there is good air circulation and trim off some of the leaves. Again this might be wrong, so if im way off someone please correct me
Also, that doesnt look like WW, looks more like my plant, which is a sativa strain called heaven's gift. Check out my pics, i'm in the 6th week of flowering

WELL FIRST OFF YOUR LEAF MARGINS ON THE SIDES ARE CURLING BECAUSE OF THE LOW 35% HUMIDITY I NOTICED IN THERE. IDEALLY YOUR HUMIDITY SHOULD BO BETWEEN 50% TO 60% DURING FLOWERING, A LITTLE HIGHER FOR VEGGING. ALSO SOUNDS LIKE YOU HAVE "NUTRIENT LOCK", IF YOUR ONE PLANT ISN'T GROWING AS FAST AS THE OTHER ONES IT COULD BE POSSIBLE. JUST FLUSH IT OUT WITH 1/4 STRENGTH NUTRIENT SOLUTION, BE SURE TO TO USE THE MINIMUM THREE TO ONE RATIO. ONE GALLON POT, POUR THREE GALLONS OF WATER THROUGH.

i have to disagree. your humidity is a tad low but 40% is an ideal humidity for flowering.
it's also the recommended humidity by REMO at urbangrower.com check it out. they have some good tips on videos.

Hey Dude, I'm growing white widow myself and the lower half of my plant was suffering the same problems. I just put it down to light not being able to penetrate the upper leaf canopy causing lower leaves to die.

I'm on my first grow so I could be wrong but it hasn't affected the plant through to the final stages of flowering.

tehdansauce said:

that plant looks quite sativa, i was under the impression that WW was closer to a hybrid.

Click to expand...

I was just about 2 say the same thing.

temp is not the issue,believe me.
There are other leaves on the lower lower half of the plant that are dying off.(in a small number)
I have surrounded the plant with 2 4foot fluors.and using 400w hps.
i dont think light is the issue.

A flush sounds good to me.
What about the molasses?
I also have been having my doubts that it is actually white widow.
I got my seeds from nirvana.

Its so hard to watch the buds be this small.Its already week 6 and the top part of the plant doesnt even have ANY white hairs.