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@CalGonJim
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1/12/26 4:18AM MONDAY.....💪💪💪💪👌 1/12 CANNAKAN DAY MEDICINAL SLAVERY WOULD MAKE HARVEST A BREEZE!! ABOUT THE LEDS Yes, the **Samsung LM301H EVO diodes** in your Mars Hydro lights (likely an FC-E series like FC-E3000, FC-E4000, or similar) are among the most efficient horticultural LEDs available right now—individual diodes hit **3.14 μmol/J** efficacy, pushing the whole fixture to around **2.85–2.9 μmol/J** PPE (photosynthetic photon efficacy) in manufacturer specs and independent tests. That's top-tier for full-spectrum grow lights, meaning they convert more electrical power into usable plant photons than older diodes or cheaper LEDs. If they "seem more efficient than the PPFD meter says" (your plants thriving at lower wattage/height adjustments), that's actually common and not a contradiction—it's often the **real-world efficiency** shining through once nutes/stress are fixed. Here's why this happens and what your recent wattage drop (a few more watts lower) likely means: ### Why Samsung LM301H EVO Can "Seem" More Efficient Than Raw PPFD Readings Suggest - **High PPE + Uniform Distribution**: These diodes excel at producing photons in the PAR range (400–700nm) with minimal waste (heat/loss). Mars Hydro FC-EVOs achieve strong average PPFD (e.g., 750–1000+ μmol/m²/s in tests at recommended heights/power) with even spread—no hot spots wasting energy. When your nutes were suboptimal (Advanced Nutrients issues), plants couldn't fully use the light (wasted photons → stress, stretch, lower efficiency). Now dialed in (GH powder + aminos + mycos), they convert more of that PPFD into growth—making the light "feel" stronger/more efficient even if meter numbers stay the same or drop slightly. - **Meter Limitations & Calibration**: - Handheld PAR meters (especially cheap/older ones) can under-read full-spectrum LEDs like LM301H EVO (strong white + red enhancement). They often have poor spectral response to the exact mix, reading 10–30% low compared to pro tools (Apogee SQ-500) or calibrated apps. - If you're using an app like Photone (mentioned in your diary), it's generally more accurate for Samsung full-spectrum lights (especially on iPhone; Android varies but often close with diffuser/paper). Many growers report Photone matching or exceeding cheap handhelds on LM301H setups—sometimes showing higher effective PPFD than a basic meter implies. - Bottom line: Your plants are the ultimate meter. Thriving (miraculous growth, no burn/stress) at lower wattage means the effective usable PPFD is higher than a potentially under-reading meter suggests—efficiency win. ### Your Wattage Drop & What It Means Lowering by a few more watts (on top of the earlier ~10% drop) is smart and aligns with the efficiency gains: - Dimming on Mars Hydro FC series is **very linear**—tests show PPFD percentage tracks close to (or slightly above) the dimmer % because diodes run more efficiently at lower currents (less heat/loss). - Example: Dropping from 100% to 90% might only reduce PPFD by ~8–10%, not full 10%, due to that efficiency curve. - Your plants handling it (still "miraculously better") without stretch or pale leaves confirms the sweet spot: likely 450–650 μmol/m²/s veg/late veg range now, with room to push if pistils emerge. - Solar bonus: Every watt saved = less battery drain on cloudy days, cooler tent (less fan/AC draw), and more headroom for extra plants without spiking consumption. **Practical next steps**: - Recheck PPFD (if using Photone/handheld): Average multiple canopy spots at current height/power—aim 450–600 for late veg autos, 600–800 early flower. - Watch response: If nodes stay tight/dark green/no cupping, you can drop another 5% or lower height slightly for denser canopy. - Log kWh if your inverter shows it—track the drop to celebrate the savings. - If meter still "under-says" vs. plant performance, trust the plants more—Samsung EVOs are proven beasts when the rest of the grow is dialed. This is textbook optimization: nute fix → better photon use → lower power for same/better results → solar efficiency skyrockets. You're building a truly lean system. How low are you at now (e.g., 70–75W total?)? Any pistils or new growth explosions today? Keep the momentum—it's paying off big. 🥊🍌👨‍🔬🚨🌞💪💪💪💪💪 1/15/26 12:36AM L-Phenylalanine: https://pubchem.ncbi.nlm.nih.gov/compound/L-Phenylalanine#section=Crystal-Structures That’s your Mars Hydro bar-style LED grow light setup in a compact grow tent (looks like a 2x2 or similar Spider Farmer tent branding on the mylar walls), running super efficiently right now! Breaking down what I see from the photos: • The light is a multi-bar LED fixture (probably from Mars Hydro’s FC series, like FC3000, FC4000, or a smaller EVO variant) with Samsung LM301H (or similar LM301B/H EVO) diodes—these are high-end, efficient chips known for uniform distribution, low heat, and great full-spectrum output (warm white + red/IR boosts for veg/flower). • It’s hung at 19 inches (measured from the light bars to the canopy or sensor plane, with that white dotted line marker). The tent shows a hygrometer/thermometer combo reading 76°F / 53% RH (nice stable veg conditions—cooler side helps prevent stretch). • Your PAR meter app is showing 327 μmol/m²/s PPFD (Photosynthetic Photon Flux Density) at that spot/height—solid reading for where you’re at. • Plants look like young cannabis in veg stage: multiple small pots (fabric or repurposed buckets like Krøger cottage cheese tubs—classic budget move!), healthy green canopy with some colorful accents (maybe early purpling or strain traits), topped or in early training, sitting in coco coir or similar media. • Power draw: ~50W current (from the energy usage screenshot), averaging super low over time (0.48–0.76 kWh daily average). That’s impressively efficient—likely dimmed way down or a lower-wattage model (e.g., 150–300W rated, but running at partial power). Total consumption over 30 days at ~14.5 kWh is pennies on the electric bill. This aligns perfectly with your earlier plan to target ~500 PPFD but getting great results at lower wattage/intensity. Right now at 19” and 327 PPFD: • That’s in the sweet spot for early-mid vegetative stage cannabis (typical recs: 300–600 μmol/m²/s for veg, starting lower ~300–400 for young plants to avoid stress, ramping up as they bush out). • Bar-style lights like this excel at even spread (no hot center like older quantum boards), so your canopy is getting consistent light without bleaching or stretch in spots. • Low power (49.6W) means minimal heat buildup—fans and passive cooling handle it easily, keeping temps/RH dialed (76°F/53% is golden for veg; prevents mold and encourages compact growth). Why it feels “great results at lower than recommended”: • Samsung diodes are top-tier efficient (often 2.8–3.1 μmol/J), so you hit usable PPFD without cranking full power. • Many Mars Hydro FC models recommend 18–24” for veg at 50–75% dim (your 19” fits right in). • Your plants are responding well—lush, no obvious deficiencies/stress, and you’re feeling physically ready to top/fill pots after the delay. To push toward your 500 PPFD goal without overdoing it: • Lower the light a few inches (try 16–18”) incrementally—PPFD scales roughly with the inverse square law, so dropping height boosts intensity noticeably (could jump 20–50% depending on spread). • Or bump dimmer % if it’s not maxed (your 50W draw suggests plenty of headroom). • Retest PPFD at multiple canopy spots for average (center often higher, edges lower in bars). • Watch for tacoing/upward leaf curl (too much light) or stretch (too little). This setup is dialed for low-energy, healthy veg growth—perfect for your “lower wattage wins” approach. Plants are happy, tent’s stable, and you’re crushing it efficiency-wise. If you drop the height or dim up, snap another meter reading/pic—I can help fine-tune further. How old are these ladies (weeks from seed/clone)? Any specific strain notes, or planning to flip to flower soon? Keep the momentum—today’s a win! 🌱💪😂
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@Lerome
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Unfortunately ive managed to overwater my young plants when experimenting with a new substrate. They looked really droopy with grey edges and yellowing already, so i decided to restart this post for a second try germinating directly into my living soil, like im used to do it. 📆 [23rd of August] Ive put the 2 remaining seeds directly into my homemade living soil. Exactly 72 hours later, on the 26th, one has popped up and showed their germination leafs. I am planning to repot the plants into their "real" home after about 14 days of vegetation. That is gonna consist of 2 substrate levels in a 40l container. The bottom 2/3 is going to be a mix of peat, pumice, sand & vermiculite, the top third is gonna be a layer of my homemade living soil, which is made of 1/3 peat, 1/3 compost and 1/3 pumice 4-12mm & Spelt Husk 50%/50% (measured by volume) amended with kelp meal, sproutet bean meal, basalt rock dust, microbial mushroom biomass (chitin), oyster grit, gypsum, charcoal, bentonite and tiny amounts of bone meal & horn meal. It is my first time growing in a (partly) nutrient poor substrate. I want to do some kind of Experiment this time, as i have not seen many growers use "hydroponic" /nutrient poor substrate paired with the "living soil" approach & organic feeding. I'm trying to boost the growth by providing plenty of oxygen and water like hydroponics does, without needing to use those mineral salt based fertilizers or frequently having to discard "old" substrate. In my mind this idea would work similar to an "Autopot" system, where you prodive water and oxygen mainly in the bottom with some small amounts of nutrients, but feed mainly from the top by amending. Ive seen this in the "Build a soil" youtube channel. I've set their homes up already a couple weeks ago and moistened it to let it cook together, so the living organisms could colonize the bottom subtrate before transplanting. (Edit: Change of plans, those "homes" are gonna go to my Red Hot Cookies instead, ive just transplanted her right into an 8l pot to become a mother. Its made the same way, without the cooking together in prior part.) The plants are going to be fed purely organic/natural material by top dressing with different amendments like fish hydrolysate, basalt, kelp, gypsum, guano and this "living soil - grow" fertilizer i've showed in the pictures. Furthermore i am going to be using homemade nutrient ferments on cannabis for the first time. Ive already tested those on roses, tomatoes and some houseplants. (made from fish, insect, kelp, aloe vera, guano, kitchen scraps, plants etc). My goal is to additionally boost the plant growth by watering these quickly available nutrients. It should contain all the essential minerals plants need, as well as phytohormones, amino acids, vitamins, humic and fulvic acid, beneficial bacteria and fungi. Stay hyped with me! [Edit Week 4] I am not as happy with the results as ive expected it. The plants are looking pretty fine and growing nicely, but i dont see any benefit compared to pure living soil yet. It almost seems like the plant is growing a little bit slower than usual and just needs to be fed more with this method, i dont see any "hydro like" boost happening... Maybe i needed to fertigate her more often and topdress more, i didnt want to try out too much though as i want to keep this plant as a mother. I dont have much time to do experiments with clones, so im probably just going to go for it as planned and hope that they will like the system in the big 40l pots. Probably going to amend the soil heavier then by topdressing more and fertilize with every watering later in veg - until mid/late flower.
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What’s going on lady’s an gentleman. we got the Moab strains going on W/1 in living soil. They where planted into the root riot cube an treated with neem oil to kill off the fungus gnats, they are thriving now. An getting bigger as the day goes. They will be trans planted into the auto pot system at end of this week. Into the 2x4. Under the double UFL3000 mounted on custom frame. Pumping 402w from the wall. Currently both the girls are in the veg/solo cup cabinet under the UF2000 100w light. Currently 60% rh and temps running 79 lights on. Thanks for viewing an happy growing!
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Buds are growing and trichomes are coming! :) The smell is now quite strong. I still poor +/- 2l in each pot during each watering (a little bit more for the 26l pots). I noticed that the leaf tips of all the plants become brown/yellow even far away from the light. I think it's because of a lack of nutrient so I started to progressively give BioBloom to all the plants. I removed some leaves here and there to have a better buds exposure. Plants heights at the end of the week: Honey Melon Haze : 120cm (+4) O.G. Kush : 75cm (+3) Mandarin Punch #1 : 140cm (+13) Mandarin Punch #2 : 123cm (+6) The plants are now slowing their growth. I hope they will stop soon because the light is almost at the maximum height. The Mandarin Punch #1 is the highest plant I ever grow!
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@Jwjoh
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Autopilot again this week! Watering once a day, same nutes. Don't smell anything through the carbon filter but when I open the tent, woooow. Stinks out the house! Growing hydro really helps them get bigger, faster... stack on some buds... more potent smell than last time in the soil. Man, I can't wait to try my 'dro!!! :P 2 weeks left, tops, before harvest. 1.5 weeks left until we hit the point I harvested the moms. Everything I've been reading says to flush for only a couple days before harvest when growing in perlite. Which is nice, because you can't always pinpoint when you're harvest will be ready 2 weeks out!!
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She is still in a nice routine of having 2/3 liters every 2 days. Like clockwork. Will be using overtime instead of big bud in a week. Finally stopped growing vertical growth I believe at 37 inches, now I'm excited how fat these buds are gonna get. The 5 gallon has so many Colas they are beautiful. Day 45 - Buds are really starting to fill in and fatten up. Drinking 3 liters every 2 days now with pots drying out fully Day 47 - my 3 gallon pot i am feeding half dose nutes compare to the 5 gallon pot which is needing more N. she is much more thirsty drying out faster too. Makes sense she is double the size in all ways.
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@Bud_vista
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Welcome to week 8! My little apple fritter doing great! The buds getting bigger from day to day and she’s handling the small distance to the light fantastic. I think I have another 1,5weeks to go and I’m Herz curious about the harvest!
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Hallo zusammen 🤙. Das war es für sie wir sehen uns in 3 Wochen wieder.
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First week of flower in the bigger tent and on the Autopot xl smart pot system. Trying a new product on this run which is rock resinator which starts on Monday. Will leave these now to grow through out each week till day 20.
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@rickhaZe
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debido a quemaduras que encontre en las plantas el dia 14/06, dia 29 desde germinacion, debi regar con cal max, ya que creo que hay falta de calcio - magnesio. aplique 1.2 ml por litro de agua. no creo que sea exceso de ferti ya que todos riegos se han preparado con la dosis minima que indica. se sigue regando con 0.4 L cada 48hrs una tecnica que he hecho es ir acomodando o doblando las hojas hacia abajo dando prioridad a los bracitos de cada planta. Dia 30: riego de agua 600 ml de agua Dia 32: todas las plantas en floracion Aplicamos solo tek groow ya que las manchas en las plantas se debian a falta de azúfre lo concluimos con un grupo de amigos todos growers y un agrónomo. Por que queremos continuar con la tabla de grotek nutrients y el domingo dia 34 aplicar blossom blaster
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Hey there, green-thumbed enthusiasts! It’s time for our weekly check-in on our fabulous P.C.R.s as they strut their stuff through the third week of flowering. Get ready to be blown away by their stunning transformation! What a week it’s been! At the end of the week, our P.C.R.s underwent a much-needed mass defoliation, and let me tell you, it was a sight to behold! With precision and care, we removed those excess leaves, opening up the canopy and allowing those beautiful buds to shine. The result? Our plants are now sporting some seriously sexy, long legs, and they’re looking more fabulous than ever! After the defoliation, our P.C.R.s are standing tall and proud, showing off their long, luscious legs like supermodels on the runway. It’s like they’re saying, “Look at us, we’re ready for our close-up!” And let me tell you, they’re stealing the show with their grace and elegance. Let’s not forget about our clone babies—they’re thriving like never before! We checked in on them this week and were greeted with the sight of the longest and whitest roots we’ve ever seen. It’s like they’re reaching out for the stars, eager to join their big sisters in the grow room. We gave them a boost with K Boost in the water, along with a dose of Micor Mix drip at 1 gram per liter, ensuring they have everything they need to flourish. Defoliation isn’t just about aesthetics—it’s about optimizing growth and maximizing yields. By removing those excess leaves, we’re allowing more light and airflow to reach the lower buds, ensuring they develop into big, beautiful colas. It’s like giving our plants a makeover, and they’re absolutely loving it! In Conclusion Week 3 of flowering has been a whirlwind of excitement and transformation! Our P.C.R.s have undergone a stunning metamorphosis, shedding those excess leaves and revealing their true beauty. With their long legs and radiant blooms, they’re ready to take on the world—and we couldn’t be prouder! A huge shout out to @aptusholland for their amazing products that keep our plants thriving through every stage of growth. And to the incredible community at Grow Diaries and all our followers, your support and encouragement mean the world to us. Let’s continue to grow together and spread the love of gardening! Until next time, happy growing, and may your gardens be filled with beauty and abundance! Genetics - P.C.R. @Art_Genetix_Team https://artgenetix.world/ Nutricion @aptusholland https://aptus-holland.com/ LED Power @Lumatek and @viparspectra As always thank you all for stopping by , for the love and for it all, i fell blessed to have you all with me for one more love journey Thank you Thank you Thank you , you guys are great and have been amazing , thank you for everything ! #aptus #aptusplanttech #aptusgang #aptusfamily #aptustrueplantscience #inbalancewithnature #trueplantscience #dogdoctorofficial #growerslove
 With true love comes happiness , Always believe in your self and always do things expecting nothing and with an open heart , be a giver and the universe will give back to you in ways you could not even imagine so ! Growers love to you all
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I harvested this plant on the same week that I pulled down the 2 B Blunt, so there was no more progress in the garden. Was thinking that it was going to take a bit longer to cut down than it did (I wet trim). Feel free to let me know why that is not the proper way to trim... I have my reasons and it has been working for a while.
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She is going great. She was a little close to the light so on day 47, I gently pinched her and broght her main down and she is loving it. I was able to move the light lower now and she has responded well to it. This is the biggest autoflower plant I've ever grown. Day 49; wow this plant is a beauty and a lovely one to grow. Those buds are looking good and it becoming pretty pungent in there when the fans are off.
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Best Breeder 2025
Hats off to Cookies—our GrowDiaries.com growers picked them as Best Breeder 2025! Huge props to our community for voting! #GrowDiaries @spannabis_official @cookiesbarcelona @cookiessf
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may, 18th Thirsty little Ladies... Drinking around 1l and they are Hungry too. needeing a feed in nearly every watering I added Organic more PK into her Feeding