I transplanted the 2 plants to a bigger pot with better soil (used buffered coco this time) on 21st March. There may have been some root damage during the transplant.
The bigger plant in the photos was growing well until the transplant. Now, I notice white edges on the top most leaves and the new growing leaves are very thin, yellow and very slow to show progress in size.
The smaller plan is exhibiting similar conditions. Slow growth and yellow edges on new leaves.
youre still well within the “transplant shock” window then. go easy on them. pull the light up (or dim it a bit) and as sdd420 go easy on the watering too. depending on how abrasive the transplant was, and how your tent conditions (VPD) are, it might take a week or so for them to go back to normal.
They look hungry to me, give more nutrients. Coco has nothing in it except what you put in it, unlike soil which has other organic matter… you said you went from bunk soil to coco coir. That’s why they are stressing out.
coco is a hydroponic medium, you can’t overwater. You can feed all day if you want.
Thanks. I’ve already lifted up the lights and dimmed them a bit. I’ll wait a couple of days more and observe.
I watered the pots after transplant and haven’t watered since. They should be good for another week in these big pots before needing water again. I’m planning a good dry back this time to let the roots fill out a bit more.
that is a lockout of iron it affects new growth as it is not mobile. more yellow today at the top this is caused by ph too high or too much water if its water you will need to lower the lights if those bulbs still have plastic caps take them off if they are getting too much light the leaves taco or turn upside down shielding themselves from the light if the soil is too wet you have too raise temps to start the cycle of transpiration lower the lights more heat i have grown with these bulbs they need to almost touch the tops of the plants esp with those caps on they are like sun glasses
Thanks for chiming in. I am running these bulbs without the plastic domes. The plants are showing some hopeful progress since yesterday after moving the lights up a bit. Then again, that could be a coincidence.
I did forget to ph the water when I watered the plants last time, so it could also be lock out. Consulting the deficiency chart on growweedeasy and comparing the symptoms of my plants, it leads me to believe it’s either zinc deficiency (caused by lockout) or light burn. I’m leaning towards light burn.
This is still my 2nd grow. Got plenty to learn.
How much wattage would you run at 1.5ft from canopy for plants these size? (I know ppfd is a better metric, but right now, wattage is what I can work with)
I was running bulbs totalling 74W before transplanting and now I am running at 60W.
This doesn’t solve your problem but I believe that transplant shock is actually overwatering. I soak my pots the day before transplant so they can dry a little and then put the dry ish rootball straight in and then don’t water until it’s time again.
they used to say 20 to 40 watts per square foot of growing space so like a 4x4 should have at least 420 to 480 min if no tent then you should up that biggly light lose is a thing outside of tents the reflective sides help you have a root zone issue i believe this is not too much lite issue i use 4 foot florescent tubes for over flow and veggie starting i do not raise the fixture till the plants touch the light vegging plants love being warm if you saw pin point burns then its the led’s like a laser
I’m following the W/sq.ft rule as well. I have it maxed at 40W/ft right now.
My “tent” is a 1.75x2x4.5 ft. packing box lined with mylar sheets and some mini fans running.
I remember having similar issues (top leaves yellowing out) on my previous grow (1 plant) with the same setup. I’m yet to figure out if it’s because of pH issues, watering issues or excessive light. If I were to accept your words about the bulbs, that would mean either pH or watering issues.
that yellowing with whitish tips is text book iron for some reason the plant cant take it up few things cause this one is ph out of wake the other is two much water changes the ph somehow i don’t know how i just know it does.
Alright thanks. I’ll pH the water to about 6.3 for my next watering and see how well the plants do.
Also, seeing how I struggle with the concept of watering, how much water should I give the pots? Do I saturate the whole pot or do I just give them about a cup or two of water depending on their size?
I ph’d the water and was careful not overwatering. The plants have bounced back. Although the smaller one is still a little slower than the other. It’s picking up.
Anyway, I topped the bigger plant (SLH) and realized that I should have cut one node deeper as this strain is a grower and might give me height issues if not tamed early.
Has anyone changed their mind and topped the same stalk again one node lower in a matter of 2 or 3 days from the previous topping? How risky would this move be?
Also, how many of you trim the growth below the topped node soon after topping?
I planned on doing it but held back due to the fear that it might slow down growth to a crawl if I strip the plant bare except 2 leaves.
first unless clones the plants will be different so cant really compare the size or anything really if only ten days later from the first pics little early for topping maybe and i wouldn’t take more than a third of the leaves off at one time ever.
