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  • ZiroOne
    commented on 's reply
    Cool but How did you get this number?

    I'm not much experienced grower but this is how i theoretically calculate yield:

    630×12×3,600÷1,000,000×65×0.25×0.6÷28.3=9.4 oz

    630: PPF of the light in umol/s
    12: number of hours that plant receive light in a day
    3600: number of seconds per hour
    1000000: number of umol/mol

    630×12×3,600÷1,000,000: is DLI in mol/day
    65: number of flowering days
    0.25: quantum yield in gram per moles of light received by plants when there is no other limiting factor. It's generally between 0.22 and 0.33 depending on light level. The more the light the less the quantum yield.
    0.6: fraction of light received by plants. I will cover all footprint of light in next grow to be able to get 1 instead of 0.6. On that case quantum yield will increases from 0.25 to 0.33 gram/mol
    28.3: number of grams per oz

    What if i cover all footprint of light?
    Can i expect 630×12×3,600÷1,000,000×65×0.33×1÷28.3=20.6 oz in your point of view? It means 2.1 gram per watt of electricity. Is it possible you think?
    Last edited by ZiroOne; 06-28-2024, 05:22 PM.

  • Bluey
    commented on 's reply
    10oz, give or take

  • ZiroOne
    replied
    Click image for larger version

Name:	20240628_160624.jpg
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ID:	625835 This is a better view. The light is 275 watt and it produces 630 umol/s as i hope I've calculated correctly.

    Can someone estimate my yield? canopy is exactly 0.50 m2. Day 39 of grow from seed and 7 from 12-12 cycle.

    Leave a comment:


  • ZiroOne
    commented on 's reply
    No. 1watt, 60mm

  • Indelacio
    commented on 's reply
    Nice cannopy!!! Are those 120mm pc fans?! 🤣🤣🤣

  • ZiroOne
    replied
    Cloudwalker, day 38 from seed; 6 days into flowering. Those cuttings are 12 days old from the day i cut them from their mothers.
    Click image for larger version

Name:	20240626_164818.jpg
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ID:	625767 Click image for larger version

Name:	20240627_130705.jpg
Views:	172
Size:	1.73 MB
ID:	625766

    Leave a comment:


  • Bluey
    commented on 's reply
    You've got some pretty decent sized buds coming along nicely there. Great depth.

  • Indelacio
    replied
    She is ready!

    Leave a comment:


  • Beano86
    replied
    Thanks bro 3 haze and a blue dream autos

    Leave a comment:


  • homegrown
    commented on 's reply
    look healthy to me, maybe a tad wet but i dont see any issues. What are we looking at? Autos, Photos? And welcome to the forum.

  • Beano86
    replied
    Have you any tips for me first grow

    Leave a comment:


  • homegrown
    replied
    Day 67...welcome to my nightmare. Last time i grew autos was 6 years ago under burple lights. Average height was around 2-21/2 feet. I'm at a loss...three of the four plants are still stretching(chem dog is the only normal plant), cant even see her in the pics cause shes way down in there. The unknown seed is in the back and has now gotten taller than strawberry pie(who is a biotch by the way...theres no pleasing her) I've gradually moved her pH up but still no real change. Probably doesnt help being 8 inches from the lights but the unknown plant is dealing with it. The outdoor plants got ravaged by last weeks heat wave and 40 mph winds for two days. No pics of them just yet. On a lighter side my outside pest control army hatched!!! Hopefully i can get some to hang around.

    Leave a comment:


  • Indelacio
    commented on 's reply
    Well the one close up is a few days old, I'm going to be doing another session with the digital microscope soon before cutting down.

  • Bluey
    commented on 's reply
    Looks great. Very healthy looking.

    I'd wait a bit looking at just the pistols from here.

  • Indelacio
    replied
    Harvesting in a few days time, about 8 weeks in and some purple is starting to show.

    Leave a comment:

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