Jacks_Pot Welcome to my new grow report!
After a few rounds with two strains, this time it will be just one strain. I’m hoping that using a single variety will give me more uniform plants (in height).
I chose Frozen Black Cherry from Anesia Seeds, an indica-dominant strain.
On 03/12/25, five seeds were sown in 0.4-liter pots. These were filled with seed-starting soil and watered with Rhizotonic (EC 0.76 – pH 6.0 – 21°C).
They were then placed on a heat mat set to 27°C using a thermostat. I never pre-germinate, so I simply put the seed straight into the moist, warm soil.
On 05/12/25, one had already popped up, and the next day all five were above ground.
Temperatures fluctuated between 20.9 and 26.0°C, and humidity stayed between 40 and 80%.
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Used method
Directly In Substrate
Germination Method
1
Week 1. Vegetation
5h ago
1/12
18 hrs
Light Schedule
25 °C
Day Air Temp
6.1
pH
500 PPM
TDS
50 %
Air Humidity
20 °C
Solution Temp
21 °C
Substrate Temp
20 °C
Night Air Temp
0.4 liters
Pot Size
0.02 liters
Watering Volume
45 cm
Lamp Distance
Nutrients 2
CANNA RHIZOTONIC
2 mll
CANNA Start
2 mll
Jacks_Pot I marked 07/12/25 as the first day of growth. The plan is to let them grow for 4 weeks, depending on how well they do. The four best plants will remain.
As always, I’ll be scrogging.
I set the COB wattage to 60 watts at a distance of 45 cm.
This resulted in a DLI of 20 / PPFD 309.
Even though I’m already giving quite a bit more light than the DLI chart suggests (the chart says to start with a DLI of 13; I’m giving 20), they still stretch during the first few days.
Not really a problem, since I’ll fix that when transplanting. Still strange how they always stretch in those first days…
This week, on day 3, I gave each plant 30 ml of tap water lightly fed with CannaStart and Rhizotonic (0.75 ml of each per 500 ml) (EC 1.08 – pH 6.2 – 19.9°C). On day 5, I gave them another 40 ml of the same nutrient solution.
On day 7, I made a bit more nutrient water with 0.5 ml CannaStart + 0.5 ml Rhizotonic per 250 ml (EC 1.18 – pH 6.2 – 20.6°C).
Each plant received 45 ml of this.
I also placed a small fan to make the seedlings gently sway.
The heat mat was set to 25°C.
Temperatures fluctuated between 20.2 and 25.0°C, and humidity stayed between 38 and 60%.
C u next week!
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2
Week 2. Vegetation
4h ago
1/11
18 hrs
Light Schedule
24 °C
Day Air Temp
6.0
pH
550 PPM
TDS
50 %
Air Humidity
21 °C
Solution Temp
21 °C
Substrate Temp
19 °C
Night Air Temp
14 liters
Pot Size
0.3 liters
Watering Volume
43 cm
Lamp Distance
Nutrients 6
Power Roots
0.8 mll
Pure Zym
0.8 mll
Terra Grow
0.7 mll
Jacks_Pot The little ones were making good progress and were right on schedule.
On day 13, four were transplanted into 14-liter Airpots.
The potting soil was again from DCM (Vegetables and Herbs) and was watered in with Power Roots (4 ml / 4000 ml) and nematodes against fungus gnats. The small heat mat was replaced with the large Root!T heat mat (60 watts).
This is what the feeding schedule looked like this week:
Day 8 → Dry
Day 9 → To 250 ml of tap water, 0.2 ml Pure Zym, 0.2 ml Power Roots, 0.75 ml Fish Force,
1 drop of Silic Rock, and 1 drop of CalMag were added
(EC 1.19 – pH 6.0 – 20.5°C). Each plant received 30 ml.
Day 10 → Dry
Day 11 → To 300 ml of tap water, 0.2 ml Pure Zym, 0.2 ml Power Roots, 0.2 ml Terra Grow,
1 drop of Silic Rock, and 1 drop of CalMag were added
(EC 1.37 – pH 6.1 – 21.1°C). Each plant received 50 ml.
Day 12 → Dry
Day 13 → Transplant day
Day 14 → Dry
The lamp wattage remained at 60 watts, but the distance was reduced to 43 cm.
This resulted in a DLI of 22 / PPFD 340.
On day 13, the second COB lamp was placed in the tent. Together they provided 120 watts at a distance of 48 cm.
This also resulted in a DLI of 22 / PPFD 340.
Temperatures fluctuated between 19.2 and 24.1°C, and humidity stayed between 35 and 59%.
Soil temperature was around 20–22°C.
The humidity was actually too low for this stage, but I decided to try a grow phase without a humidifier.
I do notice that they grow more slowly than with higher humidity.
C u next week!
