Hello folks, I'm chasing my tail trying to figure out the cause of my yellowing leaves. This is my 5th grow. Fifth generation clones of Dutch Passion Power Plant. My substrate: coco coir, homemade compost, homemade worm humus, perlite, vermiculite. Tap water ph is over 7.5, which I adjust down to 6.5 and let sit a full week or longer before watering.
My plants veg very nicely, but somewhere around week 3 of flowering, as the new buds begin to explode, my fan leaves begin to yellow. I'm now at the start of week 7 and the yellowing is beginning to really look disheartening.
​​​​​​I feel it's important to mention that the yellow leaves DO NOT shrivel up, die and fall off the plant. I tend to remove them by hand, but they require a significant "tug" before coming free. I also believe that this particular "species" simply has a lighter/brighter green color than most.
It's also important to add that the quality of the end-product is really quite satisfying.
In any event, Google seems to pinpoint my problem as, either:
In the past, I've had problems with overwatering, but if anything, I may now be over-correcting and underwatering. But at no point in time have I ever seen the plants looking wilted, whatsoever.
I'm conscious of always adjusting pH to 6.3 - 6.5
If anything, my SF2000 pro is slightly undersized for my 30"x30" tent. This run, I've dialed the light back to 80% and keep it a full 2 feet above the canopy.
Temp is max 78°F (lights on) and min 65°F (lights off)
RH 50% - 60%
As for nutrients, I water with vericompost tea, bubbled for 24 hours with a dose of molasses.
2 or 3 days later, I water with straight water.
2 or 3 days later I water with BioBizz according to their "light mix" scedule.
2 or 3 days later, plain water.
2 or 3 days later I repeat the cycle with a batch of vericompost tea.
I try to limit my runoff as much as possible.
My next run, I would like to give each pot it's own unique watering/nutrient schedule. It will be a complete pain in the a**, but I'm willing to do it, if it can fine tune my grow for the future.
But perhaps one or more of you already have experience with this scenario and can save me the aggravation. Or offer suggestions as to how I can best proceed with pinpointing the problem
​​​Thank you, in advance
Greeting from southern Germany
​​​​​
My plants veg very nicely, but somewhere around week 3 of flowering, as the new buds begin to explode, my fan leaves begin to yellow. I'm now at the start of week 7 and the yellowing is beginning to really look disheartening.
​​​​​​I feel it's important to mention that the yellow leaves DO NOT shrivel up, die and fall off the plant. I tend to remove them by hand, but they require a significant "tug" before coming free. I also believe that this particular "species" simply has a lighter/brighter green color than most.
It's also important to add that the quality of the end-product is really quite satisfying.
In any event, Google seems to pinpoint my problem as, either:
- Overwatering
- Underwatering
- pH lockout
- Light stress
- Nutrient burn
- Nutrient lockout
- Or simply, normal function of the plant cannabolizing itself before harvest
In the past, I've had problems with overwatering, but if anything, I may now be over-correcting and underwatering. But at no point in time have I ever seen the plants looking wilted, whatsoever.
I'm conscious of always adjusting pH to 6.3 - 6.5
If anything, my SF2000 pro is slightly undersized for my 30"x30" tent. This run, I've dialed the light back to 80% and keep it a full 2 feet above the canopy.
Temp is max 78°F (lights on) and min 65°F (lights off)
RH 50% - 60%
As for nutrients, I water with vericompost tea, bubbled for 24 hours with a dose of molasses.
2 or 3 days later, I water with straight water.
2 or 3 days later I water with BioBizz according to their "light mix" scedule.
2 or 3 days later, plain water.
2 or 3 days later I repeat the cycle with a batch of vericompost tea.
I try to limit my runoff as much as possible.
My next run, I would like to give each pot it's own unique watering/nutrient schedule. It will be a complete pain in the a**, but I'm willing to do it, if it can fine tune my grow for the future.
But perhaps one or more of you already have experience with this scenario and can save me the aggravation. Or offer suggestions as to how I can best proceed with pinpointing the problem
​​​Thank you, in advance
Greeting from southern Germany
​​​​​
