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I am not sure about the start date as I did not note it down so I needed to reconstruct the timeline
See VEG week 2 (2024-12-29) for the first picture
I have put 2 seeds in a glass of water (2024-12-11 Date is not certain.)
After 1-2 day I transfer the seeds to paper Paper Towel and coffee filter
(the picture is from a previous occasion But it looks more or less exactly the same now)
After a certain number of days, the seed is sown. Great White Premium Mycorrhizae powder is also used
(the picture is from a previous occasion But it looks more or less exactly the same now)
2024-12-20 The first day that the power consumption is noted on the lighting, so the plant should have started to show itself.
Lighting set to 20% which means 60W for 16 hours a day (Lumatek ATS 300 W LED)
I needed to reconstruct the timeline I am not sure about the date as I did not note it down
2024-12-20 Is the first day that the power consumption is noted on the lighting, so the plant should have started to show itself.
FAQ
Yes, the air humidity is a bit low, but it's not possible to add moisture without creating other problems.
Yes, the lamp is a bit big, but it has a dimmer so it still works well. In addition, the light distribution from the sides is very good.
week 3
2025-01-06 2 pcs 15W LED Grow Light Bulb spot lamps added. this in combination with the previous 60w so 90 watts with effective Grow Lights
2025-01-09 It looks good and is starting to take off. Thinking about HST top cutting soon
Another week. I'm starting to wonder when to move on to the flowering phase
I also noticed that I've been running a 24 hour light cycle for an unknown number of days. I accidentally pressed the "always on button" but it doesn't seem to have done much damage, maybe that's why the plant is so compact
40% = 120w LED
Hello, a new week is here. This week things are happening. I have mounted support for future growth. I also took pictures that show that you can pull out everything including the stand. This makes it easy to reach all sides.
PPFD measurements. Note that the light is well reflected. The light does not only come straight from above, the light is strong from the side also. You can see the values in the pictures. In my previous setup, the light was significantly more concentrated in the middle and the side light was negligible (there are no comparison pictures from previous grows). Now 40% brightness 120w is used for 16 hours. The lower value in the pictures (next level is 60% 180w)
I am also thinking about increasing the nutrition by 1/3.
I've changed the timer to 12 hours cycle now. Answered (Do you think I should switch to a 12 hour light cycle? )
PLEASE GIVE ADVICE: I am open to constructive criticism. Thanks in advance.
Lessons learned so far this grow:
Using coconut instead of soil is very successful (my previous grows are not published)
I will fill my pot all the way up, the edges of the pot are otherwise in the way.
A new week, this week flowering with a 12 hour cycle. I have also raise the light watt strength in the middle of the week to 60% = 180w. See last week's photo for PPFD values. I have increased the nutrition as I think I have been a bit too worried about overfeeding lately which probably made the plant more compact
Lessons learned so far this grow:
Using coconut instead of soil is very successful (my previous grows are not published)
I will fill my pot all the way up, the edges of the pot are otherwise in the way.
I can be 1/3 more generous with the nutrients next time.
Week 9 and second week of flowering. It's growing well and the stretching period is progressing, although I would have preferred a little more stretching so that I can ScrOG wider.
This week I have mounted the metal grid in the pot's frame. This allows for a Pull-out interior. Which is practical when you want to LST and ScrOG at the back, see pictures.
Do you guys have anything to suggest? Otherwise, I'll see you in about a week
10 weeks have now passed, and the third week of flowering. Trichomes are starting to appear on the leaves and the scent has changed from vegetative to flowering. Everything looks good and no signs of any diseases or nutritional problems, knock on wood.
The foliage underneath looks good, I didn't manage to take any pictures of the lower foliage that are worth posting. I'm pretty sure the plant uses the light well. The light distribution is very good and penetrates the foliage well. The daily light integral is about 41 (mol/m²/d) and the PPFD is about 950 µmol/m²/s No low stress training needs to be done anymore, I just need to make sure the leaves don't touch the fan blades.
Do you guys have anything to suggest? Otherwise, I'll see you in about a week
So now week 11 is over, the fourth week of flowering. The scent is starting to pick up. The growth has definitely been powerful this week. But I think the flowering stage looks to be further along than the fourth week, we'll see what happens in the future. A small branch that was in the way was cut but I figured I could do an experiment with it and see what happens if I try and clone it. I know that it's best to clone in the vegetative phase but this gives me knowledge.
Do you guys have anything to suggest? Otherwise, I'll see you in about a week
So now week 12 is finished, 5th week of flowering. it grows
well and there's not much to say about it, but therefore:
This time I thought I would recommend the IKEA TACKAN
Soap dispenser which only costs 1 USD /1 Euro and is
extremely practical for dosing nutrients as each press gives 1.5 ml.
Sometimes I use a conical measuring cup for extra verification
I was bothered by the mess of salt around the original
nutrient bottles' caps and the hassle of using a pipette.
Now only needed pipette for PH adjustment
This is significantly less hassle :)
Otherwise the flowers will grow well.
Do you guys have anything to suggest?
Otherwise, I'll see you in about a week
So now week 13 is finished, 6th week of flowering. This week I have only watered and cut off popcorn buds that would not have become anything useful anyway. I also took some pictures with the plant pulled out of the tent but the light was difficult so these pictures were not perfect as you can see. That's all for this week
Do you guys have anything to suggest? Otherwise, I'll see you in about a week
Week 14 is over and it's time to change one or more things. I notice that the tips of the leaves show something with the nutrition. It could be a Ca deficiency but I've been adding extra of it since the beginning and or a slight excess of P could be the cause I've also been thinking about when I should start with the pre-harves nutrient flush. Maybe I should combine the nutrient flush with the addition of Ca. Or maybe I should go halfway and only use 1/2 the nutrition with extra Ca. I'm also wondering if you think I should do anything else with the plant and its foliage.
What do you think I should do?
Addition due to comments on my question
Don't own an EC meter (yet)
Runoff is 5.6 pH It's Coco Coir so a lower pH than soil is justified. But I normally water with 5.9 pH I can continue watering with 6.1 pH to bring the pH of the Runoff up a bit. Ca is less available at a lower pH
Will also use less nutrients as Overdrive from Advanced Nutrients N1 P5 K4 is probably what has a bit too much P
Addition 26/3
There were many tips and theories about my problem. I took what I perceived as common in the answers. Apparently you can't comment on the answers in your questions so it becomes problematic to narrow down the problem. Above all, to correct misunderstandings. I gave credit to the one who I thought gave the most concrete tips. I had planned to gradually reduce the nutrients to 0 before the harvest in about 2 maybe 3 weeks. Therefore, I will:
1 Water with pH 6.1
2 Gradually reduce the nutrients in week 15
3 Run minimal nutrients in week 16
Week 15 Day 1, 26th of March.
Watering 4,5 liters (2.8 liters normally) 3/4 nutrient concentration, pH in 6.2 and pH out 5.8. Tomorrow I water 2.8 liters as usual with pH 6.1 3/4 nutrient concentration. I don't think pH or over nutrition is a problem anymore with this little measure
Leaf tips show a nutritional problem. Maybe Ca deficiency but adding extra of it since the beginning and or P excess. Thinking when time for nutrient flush. Maybe some degree of nutrient flush in combination with Ca? What do you think See week 14 for detailed question text
flushing is something to avoid not incorporate into a normal process. you inevitably strip away a lot more than whatever the problem is
don't think it's ca related, and the fact you've been adding 'some' makes it less likely too... does it add up to ~100 elemental ppm or more? If so, it's very unlikely Ca-deficiency.
This is the great thing about soilless growing. Since you add all nutrients, it's easy to learn where your upper and lower thresholds are for elemental ppm. Elemental ppm is more accurate than a TDS pen converting EC to ppm. The fact there are 3 or 4 different conversion factors to do so tells you how inaccurate those TDS pens are at giving a ppm value. EC is accurate, but it can be converted 1 of several ways all of which will tell you a wildly different PPM value, lol.
You are 7 wweeks into flower and have good ripening of calyxes. I wouldn't change much and definitely don't do anything drastic like stripping all the nutrients from your substrate with a flush. That'll just make things worse.
Free apps and web pages can calculate elemental ppm from your gauranteed analysis labels.
N 80-100
P 40-60
K 180-200
Ca 100+
Mg 75ish
S 100+
If anything is drastically off those ppms, it's your likely culprit - directly or indirectly (inhibited due to competition of something too high).
no guessing like with soil. take advantage. keep notes on this stuff over time as feeding is about cumulaative behaviour from the beginning and not just last night or last week.
We are almost there, not many days left. Now I just have to decide when to harvest. I have reduced the nutrition to a minimum. I have never had such a big plant before. New lighting and switching to coco coir have yielded results. I am not entirely sure what to do in these last days to maximize quality and yield. I am therefore open to any tips you may have.
@MrGreen187 thank you for your comment 😙People usually complain that their plants stretch too much but I always have the opposite "problem". I would rather waste on lighting than skimp on power consumption. So my plants get a little too comfortable and don't compete for light. I plan to give a little more nutrition at the beginning next time. I have been a little 2 afraid of over-salting.
BoomPot
