been battling these yellowing fan leafs, whos got some help to give?? PICS

ive been trying to fix my yellowing fan leaf problem for some weeks now and im about 3 weeks into flowering on my white widows. thinking its a mag problem but i added a dose of cal mag a week ago with its watering and nothing changed except more leafs dying off.

fox farm soil, temps around 90, exhale co2, 400 watt hps, PH 6.4-6.9, fox farm nutes

I hadnt even seen the pic wth the pot and i knew it was caused from a too small pot and root system/moisture stress, it will only get worse and will reduce final weight due to lack of healthy green leaves (solar panels) to draw energy into the plant. Repot and make sure your flowering nutes contain N.

My first assumption is Nitrogen Dificiency due to the yellowing of older leaves. Many bloom fertilizers do not contain enough nitrogen to carry the plant through bloom. I assume you switched from veg to bloom nutrients 3 weeks ago since you are in week 3 of bloom. Bloom nutes are low in N. Increase your nitrogen on the next feed and be careful not to BURN her. I would feed her a small dose of my veg nutrient in place of my bloom base next time i water. This will increase your nitrogen. If you are experienced you could also foliar feed her some N.
Just be careful not to over do it. You won't see results for a couple days.

already tried adding more nitrogen (N) and didnt do much. got cal mag plus with nitrogen and tried the veg nutes. pots too small huh? i knew they were small but i thought they would be big enough for a simple 12/12 from a seed. didnt think they would have time to fill that much space in the 70 days or so. 3 quart pots btw

If you transplant they should turn around. first off I put $ on you being root bound. try this first..

Question, have you tried looking at the roots? Are they root bound or are they a nice clean white color or are they a tannish color? Let the soil dry out good and then upend your plant and gently remove the pot. ( you might need some help with larger plants ) if the color is not a nice white then it is a fungas problem.
The reason I am asking is that it is possible that you have a pythium fungas mold on the roots, which mimic the symptoms of lockout or nitrogen def. due to the fact that they can no longer feed the plant effectively and try to take available nitrogen from the lower leaves instead of up through the roots. If left unchecked your plant will die. The good news is that if that is the problem it can be cures with an H2O2 flushing.

its been said........root-bound

scroglodyte said:

its been said........root-bound

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i got some slightly bigger pots to try out they are only a couple inches taller but at least a couple inches larger in all other directions. ill see what i can do but i cant raise my lights much higher so i cant really go much higher on pot height. thanks for the help guys!

i got the same problem it happend a few weeks into flower but it went away by itself. i think its becuase the leafs that dont get enough light get cannibalized by the plant.