Are the droopy ones smaller than the others? Probably are, if they had been droopy all the time. My plants got better around week 5 and They are okay since then. I did careful observation to solve this. Firstly I discovered that my lights were too strong and they were always suffering in the end of day cycle until I fix it and they got better. Now they look like praying both day and night and getting dry properly in every 3 days.
First check the lights second point is wait until the pots are really light to saturate again. I had sleepless nights last week just to be able to observe this.
Please post if you have pictures.
View attachment 5228828
my plants look like this end of week 7
Thanks.
Here we go, this will be my "cannabis infirmary" test run
I will try to be as concise as I can.
3x3 tent, 240w kingbrite led and mars ts1000 - 150w, 3 gallons (10litres) pots.BIOBIZZ nutes and RO water. (80% RO +20% tap)
Ph of water about 6.8-7
Autoflowers from fastbuds
I am posting 2 pictures of the same plant - day 41.
Envrionment has been good, I wont go into details but I have been following VPD and temperature ads humidity both are in good range.
This DROOPINESS has happened to 6/8 plants. (4/4 last grow, dumped them on day 30.And 2 of 4 this grow) The droopiness starts from top. Days 20-23 top was droopy but bottom fan leaves were perking up.
I have tried many different watering methods
a) 1pot was presoaked with 2 litres and rootjuice
b) 1 pot was presoaked with 1 litre
c) 2 pots werent presoaked and I used this watering method -
https://www.420magazine.com/community/threads/the-proper-way-to-water-a-seedling-in-a-large-final-container.478973/
Timeline:
1) I gave all of the plants their first big watering on aboiut day 14-15. Each got 1.5-2 liters of water. NO NUTES. Before day 14 presoaked pots received less water. non soaked pots a bit more.
2) 2nd watering on day 19-20. 25% nutes.
After 2nd watering plants start to droop immediately, they perk up 24 hours later for a day and then droop again.
3) I waited longer for 3rd watering - 7 days , because I thought the droop is caused by overwatering... The problem is they start to droop BEFORE it is dry. ALSO, there was no point waiting longer than 7 days for 3rd watering, because the pots only lost about 50 grams of weight per day AFTER day 7, while before that they were drinking about 400-500ml per day.
4)I flushed this plant. 10 days have passed. It still looks the same regarding the droop. I have watered 1x after the flush. (It dried for 5-6 days, drooping all the time)
Conclusion:
1) I made sure soil isnt too loose or too packed
2) Environment is good and water ph is about 7
3) I doubt its root bound, 3 gal pot for autoflowers should be enough. Even then, last grow 4/4 plants drooped and thats unlikely..
4) Different watering tehcniques were used, but plants all droop the same.
I have no idea why they start drooping after 3rd week....
I am doing something wrong, but I also try to follow all variables. I weigh the pots every day to see when they stop drinking etc.
Possible answer:
1)From days 20-25 there was some heavy TWISTING in top growth - that could mean a PH problem...
BUT - is it really likely that I mssed up the soil PH in only 3 weeks? I always tested the ph of the water/nutes I gave the plant.