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Cannabis seedlings stretching?

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  • johnb1963
    replied
    i have two calilfonia lightworks solar extreme 250, i'm saying, i want to use a T5, just for seedlings.

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  • ThatGrower
    replied
    And this my first time using these 10 watt lights. I only have about 16 inches of ceiling height in cupboard, plus trying to be as efficient with energy usage as possible. On top of that when i looked today the cupboard was 84 degrees, so adding additional wattage could cause temperature issues. I think im going to put the fans from low to medium power.

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  • ThatGrower
    replied
    Update* the leaves now seem to be growing faster than the length of the stem! The only two changes i made were bringing it an inch closer by adding another book underneath the tray and the 6000k blue light. The middle one in the back is a little stunted. I believe this is due to the fact i left the husk of the seed attached to its leaf, up until yesterday when i removed it. In response to Dilvish, yeah so just these strips for my seedling and have 5 plants which are flowering under 2x200 watt lights in the grow tent and the one plant by itself under a 90 watt, because i ran out of space in my grow tent.

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  • dilvish
    replied
    judging by the specs they don't look that powerful. Did you grow clones with the same lights? If so how did they turn out? Good yields? are you saying that you have these strips as well as 2 x 200watt viparspectra lights? a par reading of 200 is still a bit low if I recall correctly. Cannabis needs 300-500 to be in a good growing range.

    Although it is a little hard to tell if your seedlings are stretching that may be the case.

    Remember that half the battle when growing weed is light. Nutrients certainly help but like in nature, the more full spectrum light the better.

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  • ThatGrower
    replied
    My main grow tent is 1 square meter of space(thats 39x39in). I currently have 2x200 watt viparspectra running
    https://www.amazon.com/gp/aw/d/B08HD...b_b_prod_image

    i just ordered these ones was thinking of adding the to my seedling cupboard, next to the yellow looking lights.
    Last edited by ThatGrower; 12-30-2020, 03:38 AM.

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  • dphipps1020
    replied
    If you're going to invest in something for the full grow I probably would go with something better than T5 lights. At this point I think most blurple lights are better than T5s, IMO. How big is your grow space? There's a lot of options out there but we can probably help recommend something or point you in the right direction if we know what space you have.

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  • ThatGrower
    replied
    Thanks for the advice. Depending how the girls look heading into veg, I'll be doing the same!

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  • johnb1963
    replied
    hello thatgrower, I have the same problem. I have a full spectrum cob led grow light, and my seedling stretch too. if I move the light closer it burn them. my biggest issue is the stretch between nodes. mine are about 2". i see photos from growers on here, and there nodes are right on top of each other. thats what i want! so what i'm reading is a simple t5 bulb about 2" above the plants, is the way too go. will try it on my next grow
    Attached Files

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  • Rwise
    replied
    You have time for them to grow into their current soil, if you plant them deeper do not cover foliage, after the baby leaves die and fall off you can go deeper. I cover up to 6 limbs done early enuf they will grow roots, on most strains.

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  • ThatGrower
    replied
    The more warm colored ones are 10 w each, and the cool colored one in the middle is a surprisingly low 4.1 watts. I say surprisingly low because the the light intensity doubled upon installing it(according to my par meter). As far as the distance from plants these are both cheap lights and there was nowhere i was able to find any recommendations on that, but mostly positive reviews on Amazon so i went ahead and ordered. You said deeper into the soil?? I would like to transplant them as soon as possible, just not sure when the root structure would be at its strongest point, in order to minimize stress.

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  • dphipps1020
    replied
    My humidity is probably about the same. I know the range for veg is supposed to be higher than that but I don't pay attention to that. Mainly I just keep an eye on my temperatures.

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  • Rwise
    replied
    What does the MFG of your light/s recommend for seedlings? What is the actual wattage of it/them?
    I agree, right now they look good, if they get to tall re pot them deeper in the soil, and move them or the lights closer.
    I run Mars Hydro tsw 2000s (@100%), for sprouting and seedlings I set it at 25" (25-30 recommended) and veg 18-24", these pull about 308 watts from the wall.
    Yes your RH (much easier to spell LOL) is low and it does hurt the leaf surface.

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  • ThatGrower
    replied
    Humidity* i gotta start proof readingšŸ˜…

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  • ThatGrower
    replied
    Nice ok I definitely feel a liitle better since you said they look fine. One more question. The humidy range is 35-45 percent. I believe this is too low, but should they be ok? If not Any ideas how to raise it? I removed the humidy dome from them when the first ones emerged yesterday.

    Leave a comment:


  • dphipps1020
    replied
    I don't really pay attention to that like some others here. From my experience and what I've seen posted here, if there's stretching it's usually because the light is too high or too weak. Some of it could be due to genetics, if they're different strains. I would try lowering the light a few inches first and see if it helps. I have some blurple LEDs that I had to play with them a little to find a good height. Turns out it's supposed to be a lot closer than I thought.

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