The Grow Awards 2026 🏆
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Grow Journal Week 9: Harvest Time 🌿 Hello dear growers and growerettes, All the ladies are finally done! Although each plant turned out a bit differently, I’m thrilled that the trichomes are consistent this time. The plants took slightly longer than what the manufacturer suggested, but they’re now ready. I’ve trimmed individual branches, removed large “no sugar leaves,” and hung them upside down in the tent. They’ve been drying for seven days and should be ready for trimming by the end of this week. Equipment and Soil Review Irrigation: I plan to replace the Blumats with autopots for the next grow. While the Blumat drippers work, they did flood my tent once, which wasn’t ideal. Soil: I’ll continue using the living soil from Floranics, but this time I’ll use the ready-made soil and their new product. This run was with the old product and self-activated. I'm very pleased with the time savings and the results, which are more than satisfactory for the effort. Exciting Upcoming Events I’m excited to share my smoke report soon and to see how the rosin from Banana Krumble turns out. You'll be the first to know how it goes. Until then, happy growing!
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Flush time! I don't pump loads of water through each pot any more, now they're sitting on a tray without drainage. I've found feeding non ph'd water in the same amounts I've been giving them throughout still allows them to cannibalise, locking out any nutrients immediately now they're being given non ph'd water. I've done this for long enough to be able to confirm no difference in the overall flush, the taste or smell, or a negative impact on the plants. Personally I find it a waste of time and ph down when the goal is to stop them feeding on the nutrients in the medium, but rather the nutrients stored in the plant. I always feed only water for 2-3 weeks, never less. The Runtz are swelling, with huge cola's on some of them. Even the little Runtz runts have stacked well and getting thick! Unfortunately only getting an earthy, piney smell from all of them. Was expecting a nice strong fruity profile, so a bit disappointed. The huge flowers make up for it a bit, but I do prefer a more tastier smoke, I can't deny! 🦊
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Dit was weer een leuke kweek. Prachtige exotische kleuren en een bitterzoete geur. Ze heeft 11 dagen aan de waslijn gehangen en is nu goed droog. De toppen zijn vol en hard. 149 gram droog dat vind ik bizar veel. De grootste toppen heb ik in plastic bakken gedaan omdat ik het zonde vind om alles klein te knippen voor de wreckpotten. De zkittlez heeft een bitterzoet smaakje wat op grapefruit lijkt. Geen knock-out, maar een lekker relaxed high. Al met al weer een top strain van Weedseedsexpress 👌🏽 Iedereen bedankt voor het volgen en liken van deze grow en nogmaals veel dank naar de Weedseedsexpress 🙌🏼
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@LowzGrowz
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Favorite N Best Structure N Nug Stacking N Density Tropical Aroma Strong Terps Frosted Colors Starting to pop
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@Pokan187
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Slowly cruising and getting closer to the end, they all reacted very well to the feeding and look rejuvenated. Had some aphids on the GDP but I caught them early and sprayed them with some homemade soapy water with essential oils mixture,so it shouldn't be a problem moving forward plus I spotted some natural allies (ladybugs) The Runtz has the biggest buds and looks like it will finish first The G13 has the best and strongest smell
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Early veg. Stage Do si dos og by Original Sensible Seeds day 23  lollipoped and stripped the ladys they slept for 36 hours to trigger the far red ... so my ladys are in flowering now still don't feed them with nutes its still enough in my soil .. starting with nutrients in about a week i think they only get some HyPro spray mix HyPro Generator and some HyPro Rootsstimulator 3 days in bloom, and 4 days after defoliation damn where do all these leaves come from 😂 but everything is going well, no defects or other problems to find that was it again Soil: Atami light mix & Plagron Grow Mix mixed! Temp: 25,5 °C Lights: 12/12 Humidity: 54% Ph : 6.0 Water: 1l 23°C CO²: No Mercy Tabs Tds/Ppm: 400 ec 0.8 Nutes by Hy-Pro Fertilizers ml on 1 liter... HyPro : Spraymix 5ml HyPro : Terra vegi & bloom 00ml HyPro : Rootstimulator 5ml HyPro : Generator 00 ml HyPro : Epic Bloom 00 ml Light distance: 24 inch=61cm dimmed to 60%= 600par 1x MarsHydro TS 3000 Air Van: 800m³ Prima Klima AKF : 800m³ can lite 4x 140mm controled Be Quiet pc vans 3 l water cooling airco Diamant... 3.3l humidifier 1.8l dehumidifier Humidity control: Inkbird IHC-200 Temp control cooler/heater: Inkbird ITC-308 My grow room is variable in size 120cmx120cm² Custom Grow space for sog 150cmx150cm for scrog   S.O.G. Sea of Green Thx to Original Sensible Seeds,  HyPro Fertilizers, BTB Grow Supplies, Mars Hydro as our exclusive sponsor of our group The High Community
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Nothing but plain water this week as the bulking has continued.. trichomes are cloudy and pistils are at least 60/70 percent red depending on the pheno. That tells me its about time to harvest. Also would like to get these ladies down to avoid any bud rot or mold in the larger buds as they are getting quite big and will hold much more water and have lost quality top buds before due to over flushing and the buds having to much water in them at the time of the actual chop and hang. Anyways, they look great I cant wait to give them a try.
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@XanHalen
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Mar 31 I think things are going very well, one plant has rusty spots, pretty sure its calcium deficiency, will be upping across the board. Got the runoff ppm to a good spot, will be going back to 800ppm feeds by week 8, 750ppm this week. I want more stable genetics next time, I am way to new to be dealing with basically 3 different strains, that's what it feels like, and I have very little time as it is. Thinking of upping PPFD some more, i think the droop of the one plant was just adapting to watering till runoff, I want to see some fattening AND RIGHT NOW.
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Week 14 is here! The girls are almost done, i see alot of amber trichomes and some cloudy, so i will begin the flush in the next couple of days and then harvest in a week or two. The buds are rock hard and extremely frosty, really sticky stuff! The smell is so strong and very sweet on the nose. I see some deficiencies in both of them but they are so close to done/flush that i'm not going to go ham with nutrients to fix them. Good growing everyone!
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Info: Unfortunately, I had to find out that my account is used for fake pages in social media. I am only active here on growdiaries. I am not on facebook instagram twitter etc All accounts except this one are fake. Have fun with the update. Hey everyone 😀. A week with a wonderful development is over again 😃. I decided to stay in the vegi for another 10-14 days and to top it off a few more times. Then it is put into bloom. Until then, I wish you all the best 🙏🏻. You can buy this Strain at : https://www.zamnesia.com/de/3271-zamnesia-seeds-blue-dream-feminisiert.html Type: Blue Dream ☝️🏼 Genetics: Blueberry x Haze 20% Indica / 80% Sativa 👍 Vega lamp: 2 x Todogrow Led Quantum Board 100 W 💡 Bloom Lamp : 2 x Todogrow Led Cxb 3590 COB 3500 K 205W 💡💡☝️🏼 Soil : Canna Coco Professional + ☝️🏼 Fertilizer: Green House Powder Feeding ☝️🏼🌱 Water: Osmosis water mixed with normal water (24 hours stale that the chlorine evaporates) to 0.2 EC. Add Cal / Mag to 0.4 Ec Ph with Organic Ph - to 5.5 - 5.8 .
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**Encontrarás la traducción a español al final de la descripción** If you like this week, please hit a like, it costs you nothing! 👊. Thanks in advance 😉! From/Desde: 09/09/19 || To/Hasta: 15/09/19 From day/Desde día: 49 || To day/Hasta día: 55 -----IMAGES & VIDEOS----- V2 - Alice.K. overview on 12/12 switch P01 - Day 50 (34 cm) P8 & P9 - EyeFish Lens Shoots 🐡 P10 - Lens shadow in lower left corner 😤😤 P13 - Day 53 (36 cm) P21 - Day 55 (39 cm) P25 & P26 - 3D designed & printed branch supports -----WEEK SUMMARY----- This is the last week of growing, from Thursday I will be lowering light hours @ 1hr/day and the Sunday 2 hours reaching 12/12. Also on Thursday, I started to give her Bud Ignitor to help Alice.K. with the pre-flowering stage. From now on i will have very few night shoots as at the end of the week I placed and fixed the SCROG mesh, so I can't move the plant anymore. Later in flora i will try to do some at night inside the tent, I need to make some tests before, and see how she responds, as I don't want to stress her with night light along flowering time. Finally on Sunday I designed something to support the lower main branches, I only have photos with one branch supported as I taked the photos while the rest of the supports were printed. -----WATERING CALENDAR----- 11/09/19 (Day 51) - 3,000 ml with all week nutrients -(Bud Candy & Silica Power) & Organic Growth Nutrition only 1.5ml/l @ 1.25 E.C. PH6 15/09/19 (Day 55) - 3,000 ml with all week nutrients -(B-52) @ 2 E.C. PH6.1 *****ESPAÑOL***** Por favor, si te gusta esta semana dale un like, no te cuesta nada 👊. ¡Gracias por adelantado 😉! -----IMÁGENES & VÍDEOS----- V2 - Vista de Alice.K. en el cambio a 12/12 P01 - Día 50 (34 cm) P8 & P9 - Capturas con ojo de pez 🐡 P10 - Sobra del objetivo en una esquina 😤😤 P13 - Día 53 (36 cm) P21 - Día 55 (39 cm) P25 & P26 - Soportes para las ramas inferiores diseñados e impresos en 3d -----SUMARIO SEMANAL----- Esta es la última semana de crecimiento, desde el miércoles comenzaré a bajar las horas de luz 1 hora/día y el domingo 2 horas bajando hasta 12/12. También el miércoles empecé a usar Bud Ignitor para ayudar a Alice.K. con su etapa de pre-floración. A partir de ahora tendré pocos disparos nocturnos. Al final de la semana he fijado la malla de SCROG, y no podré mover más la planta. Más entrada la floración haré unas pruebas nocturnas dentro del armario para ver cómo responde a las fotos nocturnas, ya que no quiero estresarla con luces por la noche durante la floración. Finalmente el Domingo diseñé e imprimí unos soportes para las ramas inferiores, sólo hay fotos con una de las ramas sujetas, ya que hice las fotos mientras se imprimía el resto de los soportes. -----CALENDARIO DE RIEGO----- 11/09/19 (Día 51) - 3.000 ml con todos los nutrientes semanales -(Bud Candy y Silica Power) y de Organic Growth Nutrition sólo 1,5ml/l @ 1,25 E.C. PH6 15/09/19 (Día 55) - 3.000 ml con todos los nutrientes semanales -(B-52) @ 2 E.C. PH6,1
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Berlin Cheetaz Harvest in Flowering Day 70 Currently Drying in the Wine Fridge at 55% RH and 12°
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She is plumped, ready for flush. Will start to feed plain ph water this week to deplete remaining nutes.
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So this should be the last week of veg, as my other plant will be coming down later on today!! I will say this.I know she is definitely ready.It's been a long veg cycle, which is a testament to the growdots, which say only 4-6 weeks before you should flip... Mind you I have reported it's twice now and in both times I added fresh dots.. i just hope she doesn't become too big and overtake the 2.3x2.3x63.. i have a feeling she's going to be a good size plant... As always, big shout out and thank you @Grow4releaf.. I hope everybody's doing well.God bless and happy growing RIPCK
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Welcome Back!💚 Die Pink Sunset schlägt auch nach der zweiten Blütewoche ordentlich in die Höhe. Ihr Stretch ist relativ Stark und sie hat nun innerhalb einer weiteren Woche nochmal 10 cm zugelegt. Sie ist jetzt schön ausgeglichen und die Interniodentriebe bilden sich stark aus. Es bilden sich allmählich überall Pistillen und man erkennt die Blütenansätze richtig gut. Ich habe die Lampeneinstellung der Sanlight nun hochgefahren. Die Umgebungsgegebenheiten sind auch im Blütezelt optimal: ————— 🌞 Temp: 24,3°C 🌚 Temp: 19°C bis 20°C 💨 RH: 56% VPD: 0,97 kPa👍 😎 PPFD: 830 mqm —————
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@rhodes68
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12/10 Week 11 Wow last week on Layla so bread and water hold the carbs for her now on. Doubt if Maggie will be finished but may be forced to move her on anyway, we will see. I would hate that Gotta decide soon on feeding her as they will need water tomorrow 12/11 Its decided Maggie will be allowed to finish off and I will find a way to keep em all happy. Something special may be happening there, want to see it. Layla though is about done just some ripening and then harvest. one gal each @6.4, Layla just water, Maggie got the PK boost 12/ml but remember there is a good bit of Dr. Earth still in the pot so cant really starve em. Update Ok here is the plan. Another grow in veg has yet to get into flower which is great though its due just any day, feeding it some bloom nuets in the mix to keep it in veg... we hope. But when it goes into flowering stretch at least one needs to rotate into the flower tent so harvest Layla, one may remain in the small tent till Maggie goes. Best I can do 12/13 Some camera time with lights on just getting used to it. Canopy looks great guys considering whats in there LOL 12/14 Just pics and we have decided to let these go as long as they want as the other grow is happy where it is for now. After looking close there are still some clear tricones on both so waiting is it 12/16 Maggie's buds have gotten so heavy I had to make a quick trellis out of 3 ft stakes and twine to support them and give the rest of the tent room. Pics above She has come a long way from a sick little plant err guys? Seriously thinking of dropping Brandy from the grow totals, she was just so stunted just one of Laylas buds is going to out produce her.
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@Naujas
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63 days!!!! the girl is growing and maturing fantastically :) of course I would like a bigger room for her, but I grow it in the conditions I have :) the girl drinks 3 liters of water with nutrients biobiiz 6.3ph (I also give advancet nutrients micro) she likes it :) since I have two different species growing in my tent, I don't understand the aroma of the trivia :D their terpenes smell very delicious, I just don't understand which one smells better :D good luck to everyone :).
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🌸 White Widow — Week 7 Flower (Week 11 from seed) Status: Full flower, bulking rapidly. Vibe: Dark foliage, compact form, heavy frost, 90s aroma profile. Feeding: Aptus + Plagron lineup (Power Buds, Sugar Royal, Green Sensation, Regulator, CalMag, All-in-One) Photos: Sony a6000 — loyal workhorse for studio shots. 📷 ⸻ 🧠 Deep dive — Why 12/12-from-seed makes a plant “go hard” Plants evolved to reproduce. Their primary biological drive is to make seeds. Photoperiod (day length) is one of the most reliable seasonal cues plants use to decide: is it time to flower? Mechanisms at play (simple → nerdy): • Photoperiod sensing: Leaves detect day length via phytochrome systems (Pr Pfr). Short days (or the 11/13 rhythm) flip the hormonal cascade toward flowering. • Florigen & flowering hormones: When the plant senses “short days,” it produces mobile signals (florigen) that travel to the shoot apex and shift gene expression from vegetative growth to reproductive development. • Carbohydrate reallocation: Energy stops making more leaves/branches and is directed into calyxes, resin synthesis, terpene pathways, and seed/flower tissues. • Result: A plant that thinks “the season’s ending — reproduce now!” goes all-in: denser flowers, rapid calyx swelling, intense trichome production. Important point: they don’t know about pollination. The plant can’t tell you whether pollinators exist or whether pollen will land — it simply invests in attractive, resinous flowers to maximize reproductive success. As growers, we exploit that drive to produce potent sensimilla (unpollinated) flowers. ⸻ 🔬 Why your White Widow is exploding in quality right now • Immediate reproductive programming: Starting floral signals early (12/12 from seed) forces the plant to prioritize flower formation rather than vegetative mass. That yields compact, dense colas. • High PPFD + short day = strong DLI in less time: With fewer hours of light, your lamp intensity is higher in those hours → powerful photosynthesis during the window the plant has chosen. • Nutrition tuned to flower: the Aptus + Plagron stack feeds the metabolic surge — PK + biostimulators for bulking, sugar stimulators for terpene pathways, Ca/Mg for structural health. • Genetics: White Widow is resin-happy; give it the right cues and it will frost up like a sugar cookie. ⸻ 🌈 Why her colors are going dark (and why that’s beautiful) Leaf & bud color comes from a balance of chlorophyll + accessory pigments (anthocyanins, carotenoids) and is influenced by: • Genetic propensity (some phenos are naturally darker) • Temperature swings (cooler nights often increase anthocyanin expression) • pH / nutrient balance (some deficits/ratios nudge color pathways) • Light spectrum intensity (strong red/far-red influence can shift pigment expression) Dark phenos often correlate with high terpene and anthocyanin expression — visually stunning and often highly aromatic. ⸻ 🔁 Quick timeline recap (for newcomers) • Germination & early mistakes: initial heat-mat loss → restarted, one strong survivor. • Veg: compact, short internodes under the 11/13/12-12 shuttle → stacked nodes. • Early flower: slow to show, but once she flipped she committed. • Now – Week 7 flower (Week 11 from seed): heavy bulking, thick trichomes, deepening color, classic White Widow aroma emerging. ⸻ 🔭 What to expect next (this week → next week) Expect: • Continued bulking of calyxes and cola weight. • Explosion of trichome coverage — white, cloudy glands multiply. • Stronger terpene smell (earthy, spicy, resinous 90s profile). • Possible color intensification — deeper greens, potential purples depending on phenotype & nights. Do not expect: • Major new stretch — she’s committed to flower and will remain compact. • Immediate harvest — typical White Widow still wants its weeks; plan for patience (mid-late flower bulking happens over several more weeks). ⸻ ⚖️ Should you run all seeds 12/12 next cycle? (pros & cons) You asked if you might run every seed 12/12 — here’s the honest rabbit-hole: Pros • Much faster cycle → less time to harvest. • Compact plants → ideal for small spaces or stealth grows. • Often denser single-plant yields; less training needed. • Great for experimentation, multi-strain rapid rotation. Cons • Generally lower total biomass per plant vs. long veg runs. • Some genetics need veg time to express full canopy & branching; yields may be lower for those strains. • Root systems can remain smaller → may stress under high PPFD if not supported. • Less flexible for heavy-topping/lst/manipulation strategies. Bottom line: for strains with good genetics for flowers (like White Widow), 12/12-from-seed can be very rewarding. For sativa-dominant, tall strains you might lose yield without long veg. ⸻ 📷 Gear love — Sony a6000 shoutout I’ve got to echo it: that camera is a workhorse for growers. Compact, responsive, great color fidelity, and perfect for low-light studio shots when paired with proper exposure. The a6000 captures the leaf texture, color depth, and bud gloss in a way phones struggle to match. Long live the loyal shooter. 📸✨ ⸻ 🙏 Gratitude — the usual and the real Thank you to: • Zamnesia — for the genetics & the nostalgia. • Aptus & Plagron — the chemical & biological push that lets the plant sing. • ThinkGrow / Future of Grow / TrolMaster — lighting, control, and environment orchestration. • You — the makers, lovers, critics, curious readers — your energy fuels this diary. And to our White Widow — for showing up, forgiving mistakes, and giving back in beauty. 💚 ⸻ Week 7 flower — Week 11 from seed. Darker colors, heavy frost, the classic 90s scent, and a compact structure that proves 12/12-from-seed can produce absolute fire. We went full-in on Aptus + Plagron, kept the Emerson red-lead sunrise/sunset, and trusted the genetics. Watching her build is pure joy. Come see the series in 4K on YouTube — every detail, every shimmer. 🌿🔥📷 #WhiteWidow #Zamnesia #GrowDiaries #12fromSeed #EmersonEffect #Aptus #Plagron 📲 Don’t forget to Subscribe and follow me on Instagram and YouTube @DogDoctorOfficial for exclusive content, real-time updates, and behind-the-scenes magic. We’ve got so much more coming. You won’t want to miss it. • GrowDiaries Journal: https://growdiaries.com/grower/dogdoctorofficial • Instagram: https://www.instagram.com/dogdoctorofficial/ • YouTube: https://www.youtube.com/@dogdoctorofficial ⸻ Explore the Gear that Powers My Grow If you’re curious about the tech I’m using, check out these links: • Genetics, gear, nutrients, and more – Zamnesia: https://www.zamnesia.com/ • Environmental control & automation – TrolMaster: https://www.trolmaster.eu/ • Advanced LED lighting – Future of Grow: https://www.futureofgrow.com/ • Root and growth nutrition – Aptus Holland: https://aptus-holland.com/ • Nutrient systems & boosters – Plagron: https://plagron.com/en/ • Soil & substrate excellence – PRO-MIX BX: https://www.pthorticulture.com/en-us/products/pro-mix-bx-mycorrhizae • Curing and storage – Grove Bags: https://grovebags.com/ ⸻ We’ve got much more coming as we move through the grow cycles. Trust me, you won’t want to miss the next steps, let’s push the boundaries of indoor horticulture together! As always, this is shared for educational purposes, aiming to spread understanding and appreciation for this plant. Let’s celebrate it responsibly and continue to learn and grow together. Friendly reminder all you see here is pure research and for educational purposes only, With true love comes happiness. Always believe in yourself, and always do things expecting nothing and with an open heart. Be a giver, and the universe will give back in ways you could never imagine. 💚 Growers love to all P.S. — Deep dive on DLI (Daily Light Integral) — short, clear, and a little nerdy (in the best way). 🌞🌿 1) What is DLI, simply? DLI = the total amount of photosynthetic light (photons) a plant receives over one day. It’s expressed in moles of photons per square metre per day (mol·m⁻²·day⁻¹). While PPFD (μmol·m⁻²·s⁻¹) tells you instantaneous light intensity, DLI tells you how much light the plant actually used that day. ⸻ 2) The formula (how to calculate it) Use this exact formula: text{DLI (mol·m}^{-2}text{·day}^{-1}) = frac{text{PPFD (μmol·m}^{-2}text{·s}^{-1}) times text{seconds of light per day}}{1{,}000{,}000} Where seconds of light per day = hours of light × 3600. I’ll show worked examples so it’s easy to follow. ⸻ 3) Worked examples (digit-by-digit so it’s crystal clear) Example A — your reported PPFD ≈ 766 μmol·m⁻²·s⁻¹ and 11 hours light • seconds of light = 11 × 3600 = 39,600 s • photons per day = 766 × 39,600 = 30,333,600 μmol·m⁻²·day⁻¹ • convert to moles: 30,333,600 ÷ 1,000,000 = 30.3336 mol·m⁻²·day⁻¹ So: 766 μmol·m⁻²·s⁻¹ × 11 h → DLI ≈ 30.3 mol·m⁻²·day⁻¹ Example B — same PPFD but 12 hours • seconds = 12 × 3600 = 43,200 • photons = 766 × 43,200 = 33,091,200 • DLI = 33,091,200 ÷ 1,000,000 = 33.0912 mol·m⁻²·day⁻¹ Example C — other quick refs • 700 μmol × 11 h → DLI ≈ 27.72 • 800 μmol × 11 h → DLI ≈ 31.68 • 400 μmol × 11 h → DLI ≈ 15.84 • 1000 μmol × 12 h → DLI ≈ 43.2 (You can plug any PPFD and hours into the formula — those are ready-made reference points.) ⸻ 4) What DLI targets are useful for cannabis? • Vegetative (gentle): ~12–25 mol·m⁻²·day⁻¹ • Flower (typical good range): ~25–40 mol·m⁻²·day⁻¹ — most home/pro growers aim here • High-intensity/CO₂-enriched commercial: 40–60+ mol·m⁻²·day⁻¹ (needs CO₂, stronger conditioning) So your example (≈30 mol·m⁻²·day⁻¹ at ~766 PPFD × 11h) sits very nicely in the flower range. That explains the dense bulking + heavy resin you’re seeing — our DLI is right where White Widow loves to convert energy into flowers. ⸻ 5) Practical implications — what DLI affects and what to watch • Higher DLI → higher photosynthesis → more carbohydrate to drive bud bulking and terpene/trichome production. • Higher DLI requires more water and nutrients. Plants transpire more and pull more minerals; be ready to feed and irrigate appropriately. • Leaf temperature / heat stress: pushing PPFD up increases canopy energy/heat — keep airflow, VPD, and room temps under control. • CO₂ matters: if aiming beyond ~40 mol/day, elevated CO₂ (e.g., 800–1200 ppm) becomes productive; otherwise additional light won’t be used efficiently. • Distribution matters: DLI is an average over the canopy. Hotspots or shaded pockets mean some flowers get too much or too little — even light spread (and PAR mapping) matters. ⸻ 6) Actionable tips for your run (based on your 11/13 / 12/12 experiment) • We’re hitting excellent flower DLI (≈30 mol/day at 766 μmol × 11 h). That’s why buds are dense/frosty — keep the rhythm. • If you shorten hours (e.g., 11 h) keep PPFD high to maintain target DLI. If you lengthen hours (12 h) you can reduce peak PPFD slightly and still hit the same DLI. • If you raise PPFD to chase more DLI, ramp slowly (a few μmol/sec per day) to let stomata and roots acclimate — avoid sudden bleaching. • Watch watering & EC — higher DLI → faster uptake → more frequent but measured feeding. • If you ever push DLI 40 mol/day consider CO₂ enrichment and perfect VPD control to have that extra light used efficiently. ⸻ 7) Quick rules of thumb • Want to hit ~30 mol/day with 11 hours on the clock → aim for roughly 700–800 μmol·m⁻²·s⁻¹. • Want ~33 mol/day at 12 hours → ~766 μmol·m⁻²·s⁻¹ matches that nicely. • If you see leaf cupping/bleaching, you’ve likely exceeded safe PPFD for that canopy or temps are too high — back off, check VPD.