💎 Black Diamond Auto by Zamnesia – Pheno A
Week 7 | The Black Diamond Begins to Shine
Welcome back to another chapter of the 8×8 Adventure!
One of the things I love most about this project is watching every phenotype write its own story.
Every plant grows under exactly the same conditions.
The same environment.
The same nutrients.
The same lighting.
The same watering schedule.
The only thing changing is the genetics.
Black Diamond Pheno A continues proving why phenotype hunts are so fascinating.
From the very beginning, this lady has been allowed to grow naturally. No topping. No high-stress training. No aggressive manipulation. Just a little leaf tucking here and there whenever a fan leaf shaded a future bud site, allowing her to express exactly what her genetics wanted to become.
Sometimes growers feel the need to shape every branch.
Sometimes the best decision is simply to step back and let nature do what it does best.
This Black Diamond is becoming the perfect example of that philosophy.
🌱 The 12/12 From Seed Adventure
For anyone discovering this diary for the first time, welcome!
Every plant in this project has been grown under a 12 hours on / 12 hours off light schedule from the very first day of life.
There is no traditional vegetative stage.
The goal is to observe how each genetic behaves when every environmental variable remains identical while allowing the plants to reveal their natural structure without extending their vegetative growth.
It's an incredibly rewarding way to compare phenotypes because each plant develops its own personality without artificial intervention.
And Black Diamond Pheno A has certainly developed one.
💎 A Natural Beauty Becoming a Giant
Last week she impressed me.
This week she surprised me.
Standing at 169 cm, she has continued stretching while maintaining one of the cleanest structures in the entire room.
Long branches.
Excellent spacing.
Beautiful symmetry.
Every branch seems to know exactly where it wants to grow, naturally reaching for the light without fighting for space.
The central cola has become a true focal point, but what impresses me even more is how evenly the secondary branches are developing around it.
The entire plant feels balanced.
Confident.
Purposeful.
Sometimes you look at a plant and immediately know she's going to become something special.
That's exactly the feeling I get every time I open the tent.
🌸 Flower Production Is Moving Fast
This is where things are becoming really exciting.
Bud formation has accelerated dramatically over the past week.
Every flowering site is stacking beautifully, with fresh white pistils covering nearly every inch of the future colas.
What's particularly impressive is how far ahead she appears compared to her actual age.
If someone showed me these flowers without any context, I'd probably guess she was at least another week or two further into bloom.
The flowers already have real presence.
The main cola is thickening.
The side branches are filling in rapidly.
And everywhere I look, I see healthy calyx development preparing for the bulking phase that's just around the corner.
She's definitely one of the most advanced plants in the room.
❄️ Frost Arriving Earlier Than Expected
Another pleasant surprise this week has been the resin production.
Even this early into flowering, the sugar leaves are already beginning to sparkle.
Tiny trichomes are appearing across the developing flowers, creating that first shimmering layer every grower loves seeing.
It's still early.
There's a very long way to go before harvest.
But she's already hinting at the frosty future she's preparing.
If this pace continues...
She could become one of the frostiest ladies of the entire project.
🍃 Letting the Plant Do What She Does Best
One thing that hasn't changed throughout this grow is my approach.
No topping.
No high-stress training.
No unnecessary defoliation.
No complicated techniques.
Only occasional leaf tucking whenever a large fan leaf blocks light from reaching a developing flower site.
That's it.
Everything else has been entirely natural.
Watching her develop like this is a wonderful reminder that healthy genetics often know exactly what they want to do when given the right environment.
Sometimes the grower's biggest job...
...is knowing when not to interfere.
💧 Feeding the Next Stage of Bloom
As flowering accelerates, the feeding program continues supporting the increasing nutritional demands.
This week's recipe includes:
• Plagron Terra Bloom — 2 ml/L
• Plagron Power Buds — 1 ml/L
• Plagron Sugar Royal — 1 ml/L
• Plagron Pure Zym — 1 ml/L
• Plagron Green Sensation — 1 ml/L
• pH adjustment using Plagron pH Plus and Lemon Kick
The EC has now increased to 1.95, giving the plant everything she needs as flower production continues ramping up.
The response has been outstanding.
Healthy leaves.
Excellent colour.
Strong growth.
Zero signs of stress.
Exactly what every grower hopes to see.
💡 Welcoming Lumiflora Under-Canopy Lighting
This week also marks another exciting addition to the project.
I've introduced Lumiflora under-canopy lighting.
Most LED fixtures do an excellent job illuminating the top of the canopy.
The challenge comes later in flower, when dense foliage naturally shades the lower branches.
That's exactly where under-canopy lighting becomes interesting.
Rather than replacing the main light, Lumiflora simply adds additional usable light underneath the canopy, helping areas that would normally receive far less illumination.
What am I hoping to see?
• Better development of lower flowers.
• More even bud density throughout the plant.
• Improved light penetration into the middle of the canopy.
• More efficient use of every flowering site.
What am I not expecting?
Miracles.
Under-canopy lighting won't compensate for poor genetics.
It won't replace good environmental control.
It won't fix nutrient problems.
It's simply another tool that, when combined with healthy plants and a stable environment, has the potential to improve overall flower quality from top to bottom.
I'm genuinely excited to see what difference it makes during the coming weeks.
🌡️ Environmental Conditions
The environment remains stable, allowing the plants to focus entirely on flower production.
Current conditions:
• Week 7 Flower
• Height: 169 cm
• Light schedule: 12/12
• Day temperature: 29°C
• Night temperature: 25°C
• Relative humidity: 60%
• pH: 5.8
• EC: 1.95 mS/cm
• Root zone temperature: 21°C
• Nutrient solution temperature: 21°C
• CO₂ concentration: 639 ppm
Consistency remains one of the biggest contributors to healthy, stress-free growth.
📸 This Week's Gallery
This week's photographs tell an incredible story.
The full-plant images reveal a tall, elegant phenotype confidently rising above much of the surrounding canopy, while maintaining exceptional balance from top to bottom.
The close-ups show flower sites rapidly stacking along nearly every branch, already carrying impressive numbers of bright white pistils.
One thing that immediately catches my eye is the amount of visible frost beginning to appear on the sugar leaves.
It's subtle.
But it's definitely there.
The main cola is quickly becoming a beautiful spear, while the secondary branches are following closely behind.
This plant photographs beautifully because she's simply growing beautifully.
🔮 Looking Ahead
The coming weeks should become some of the most exciting of the entire grow.
Stretch should gradually slow as more energy is redirected toward building dense flowers.
The calyxes will begin swelling.
The flowers should continue stacking into longer, thicker colas.
Resin production will accelerate.
And I'll be watching the impact of the Lumiflora under-canopy lighting with great interest to see how the lower flowers develop compared to previous runs.
If she continues performing like this...
This Black Diamond may become one of the true stars of the entire 8×8 Adventure.
And honestly...
She's giving me every reason to believe she will.
💚 Thank You
Thank you so much for following another chapter of this journey.
Growing is always a balance between knowledge, patience, observation and trust.
Sometimes the best thing we can do is simply create the right conditions...
...and allow the genetics to tell their own story.
A huge thank you to:
💚 GrowDiaries for giving growers around the world a place to learn, share and inspire one another.
🌱 Zamnesia for providing the incredible Black Diamond genetics that make this phenotype hunt possible.
💜 Plagron for supplying the nutrition that continues supporting these ladies from seed to harvest.
💡 Future of Grow LED for providing the consistent light driving this entire project.
🌿 Lumiflora for joining the adventure with innovative under-canopy lighting, and for helping explore another way of improving canopy efficiency.
🌡️ TrolMaster for maintaining the stable environment that allows every phenotype to express its full potential.
And finally...
Thank you to everyone following these diaries, leaving comments, asking questions and sharing your own growing experiences.
Every week these plants become a little more impressive.
This Black Diamond...
...is becoming impossible to ignore.
Growers Love. 💚🌱