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Any help would be appreciated!

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    COCO COIR Any help would be appreciated!

    Hey, so I recently read an article on seedlings which stated that you should leave your light on 24/7 until the initial leaves (not the cotyledons) have gotten about 2-3 cm long however I've also heard that people like to keep 18/6 the entire way through until they're ready to swap to flower, my question is: in YOUR opinion should I keep the lights on 24/7 for now or swap them to 18/6? Which do you think would be more beneficial for the plant and why? Also do these girls look healthy? Any help or advice is much appreciated! Thanks everyone!
    Current Grow: 1X Mimosa Evo - 1X BCN Critical XXL
    Medium: Atami Coco substrate with 30% perlite mixed in 1 gallon fabric pots until 3 gallon transfer

    Space​​: 3 foot X 3 foot X 6 foot lined in pandafilm

    Lighting: Mars Hydro TSW2000 at 20 inches away using dimmer to control light output

    Nutrients: Shogun A+B, Vitamax Calmag, Shogun pK 9/18, pH up & down

    Average Room Temp: 22°C night - 25°C day --- 71.6°F night - 77°C day.

    Average RH: 50% - 80% in seedling stage, 50% - 70% in vegative stage, 30% - 50% in Flower

    Methods Used: TBD

    Welcome @Begginersprouter, IMHO, 24/7 lights are not a good idea. Plants like all beings need a rest period. Mine are 9 weeks now, have been on 18/6 since sprouting, and are very healthy. Your seedlings look great, not leggy, so you lights must be about right level. as you planted direct in a larger pot, be careful about watering.

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    Started 9/9/21: 2nd grow: Hawaii Sativa MAUI auto x 3
    Finished Grow: Critical Mass photo - fem x 3 plus 1 clone same
    Medium: FF Coco Loco plus 30% Perlite in 5 gal cloth bags
    Space: 30x48x62 DIY cabinet lined w/space blankets
    Lighting: Bloomspect SS1000 Quantum board x 3 - 300 watts actual draw total
    Soil Supplements: Worm Castings, Guano, Crab Shell, Oyster Shell, Neem and Karanja Meal, Volcanic Basalt Dust (for minerals), Recharge root micros, ACV for organic pH down as my filtered tap water runs over 7.5 pH
    Ventilation: Vipospar 4" Exhaust Fan w/RH controller, 12" Carbon Scrubber
    Reptile Humidifier/Fogger w/same RH controller, bottom intake fan, 6" heater
    Cabinet on screen porch. N AZ @ 4000 ft.
    Old hippies never go away, they just
    Grow Their Own

    My salute to all who have served
    Semper Fidelis!


    • Beginnersprouter
      Beginnersprouter commented
      Editing a comment
      Thank you so much for all of the help! I thought my seedlings looked healthy as well however I posted them on a Facebook group page and got told that they're healthy, that ones dead due to disease and to get rid of it already 😂 I wasn't quite sure why they said that, a tiny bit of the cotyledons had a slightly yellow tint and due to that someone said that it's damping off and to discard it but I wasn't quite sure, thank you as well for instructing me how to do that I've been curious about that for a while!

    In the past I grew autos using a 18/6 light schedule and the growth was good. On my last 2 grows I've been keeping the lights on 24 hours a day and my growth has well exceeded my expectations. Growth is amazing at 24/0. Honestly I'm pretty impressed how fast they've grown.
    5x5 Gorilla tent
    Spectrum King SK402 - 2× Optic XL1
    Infinity T8 exhaust fan
    Technaflora nutes
    Nectar of the Gods soil


      18/6 from the start with photos is what most people and I do.
      But I seen people do 24/0 with photo strains and they can handle it, no problem.
      autos I would keep the lights on 24/0.
      Just because people are over 50 doesn’t mean they know everything.
      You can teach a old dog new tricks - But it will still think the old ways are the “best” lol


        I did the 24/0, 20/4 before the switch, for me I prefer 18/6 cuz like humans they need to rest.
        Light: Viparspectra P2000, Viparspectra P1500, Viparspectra XS2000, KingLed 1500
        Medium: organic, Fafard perlite, Fafard Urban Garden organic mix, Organic compost shrimps.
        Nutrients: Alaskan Fish, Advanced Nutrients Big Bud, Advanced Nutrients Ancient Earth, Advanced Nutrients Sensi Cal Mag Xtra
        Seeds: 9 GG#4 autos, 9 Amnesia Haze autos
        Grow room : 8X12X10, 2 industrial fans, 1 dehumidifier, 1 Vivosun carbon filter & controller
        And trying to grow Mexican landraces in the Yucatan. Well why not eh !!


          I was doing 18/6 but recently I switched to 24/0. Seems to be working fine so far. I have both autos and photos in coco and soil (separate, not mixed) and they all seem to like the adjustment. I thought about doing 20/4 for the extra light time but still with a little break, but decided against it this time. Not really an answer for your question but I think lighting is all personal preference and what will work for you. Happy growing!


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