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  • #16
    I know you are a pro grower. Let me ask one more question before i follow your advices.

    Ever heard about PhytoMax? PhytoMax can't Overcome HPS watt to watt?
    NebulaHaze
    Increase yields & quality, & decrease cost with Black Dog LED! Our lights offer a 1-to-1 replacement of existing fixtures & require no extra equipment.

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    • #17
      Originally posted by Iammygod View Post
      I know you are a pro grower. Let me ask one more question before i follow your advices.

      Ever heard about PhytoMax? PhytoMax can't Overcome HPS watt to watt?
      NebulaHaze
      Check out this post http://forum.growweedeasy.com/forum/...ights-worth-it

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      • #18


        Killer trunk Pur! Love the structure!

        I'd maybe pluck some of those leaves. If she was in my grow tent, she'd be shivering! I get defoliate-happy sometimes....

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        • #19
          Thanks for the advice. I was a little concerned with so many leaves touching and trapping moisture even with humidity around 50% and good air circulation. Don't need mold showing up now! Plan one more defloration this weekend...

          Comment


          • #20
            Originally posted by Iammygod View Post
            I know you are a pro grower. Let me ask one more question before i follow your advices.

            Ever heard about PhytoMax? PhytoMax can't Overcome HPS watt to watt?
            NebulaHaze
            I feel your pain because when I first started growing almost a decade ago I really, really wanted LEDs to work. I didn't want to have to deal with an HPS and honestly, no matter what people said, nothing deterred me. I had to find out by trying one for myself and sometimes I think that's just what you have to do. I can just tell you from experience that we've tried different LEDs over the years, including a P900 we just got a couple months ago and though the technology has definitely gotten far better since 2008, even now they still can't beat HPS lights for yields/watt on a consistent basis. The technology just isn't there yet.

            One thing you have to remember when looking at any manufacturer's product page is that you're reading a sales page by someone trying to sell those LEDs to you. You have to take everything they say with a generous helping of skepticism. They want to sell you something with a starting price of $700, so there's a lot of incentive for them to tell you what you want to hear. Conversely, we have no stake in any kind of grow light whatsoever, and are just reporting on works the best for growers based on our experiences the experience of the many growers who've written in over the years.

            But to answer your question, I'd say it's extremely unlikely their light can overcome an HPS watt-for-watt. If you look at their case study, they say that their LED is better than an HPS based on the fact that their LED pulled 0.74 g/watt compared to the 1000W HPS that only gets 0.45 g/watt. The reason that's misleading is because an experienced grower can pull 1+g/watt with a 1000W grow light. It's a little suspicious that they have such a poor grow with the HPS and such a great one with the LEDs.

            Whenever you're going to spend a fair bit of money, your best bet is to see if you can find videos/pictures of grows from people not selling the product, using the light you want and getting the yields you want. At least then you know that real-life growers are getting the performance you're paying for!

            Edit: Some of the post got cut out for some reason.

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            • #21
              How can it possible!!! How can a well-designed LED panel with almost the same reletive intensity and spec that chlorophylls can absorb is not able to defeat an HPS that produce tons of wrong reletive intensity. Plants even need more wider range of wavelengths that HPSs are able to emit.

              No... i can NOT believe that... Its impossible. Even pro growers can make mistakes, you agree with me? Maybe something is wrong in their acknowledge. I think a grower with decades growing with HPS lights may apply the conditions he thinks to be the best for grows they had before, the conditions that are not optimized for LEDs. For an example, if HPS produce too much IR of NIR than leaves need, so maybe LED plan need warmer atmosphere around the leaves to make them warm enough.

              Im currently working on theories i need to understand plants personality(don't shoot at me if ive never grown plants before.I know, my English is weak either, im working on it ). But on the paper and based on physics laws I've learnt well-designed LEDs should be far better than HIDs.

              If you have links full of information about thoeries PLEASE let me know. special thanks to Nebula and you for your great articles.


              SiriusFourside

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              • #22
                How can it possible!!! How can a well-designed LED panel with almost the same reletive intensity and spec that chlorophylls can absorb is not able to defeat an HPS that produce tons of wrong reletive intensity. Plants even need more wider range of wavelengths that HPSs are able to emit.

                No... i can NOT believe that... Its impossible. Even pro growers can make mistakes, you agree with me? Maybe something is wrong in their acknowledge. I think a grower with decades growing with HPS lights may apply the conditions he thinks to be the best for grows they had before, the conditions that are not optimized for LEDs. For an example, if HPS produce too much IR of NIR than leaves need, so maybe LED plan need warmer atmosphere around the leaves to make them warm enough.

                Im currently working on theories i need to understand plants personality(don't shoot at me if ive never grown plants before.I know, my English is weak either, im working on it ). But on the paper and based on physics laws I've learnt well-designed LEDs should be far better than HIDs.

                If you have links full of information about thoeries PLEASE let me know. special thanks to Nebula and you for your great articles.
                I think in situations like this, if you are really set on something, the best thing you can do is just do it. That's what we ended up doing. You asked for our experience and we've shared everything we've learned in the time we've run the website, run our old community, grown with LEDs and HPS ourselves, and spoken with other growers and LED manufacturers. At this point I don't think there's anything I can tell you about our experience that will make any difference to you, so my advice is to just go for it!

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                • #23
                  What's the idea behind placing reflective material on the growing medium? prevent light from absorbing by medium(they are dark so they can absorb light better) and increasing amount of light that reaching to leaf surface or prevent light from reaching roots? But i think this material also prevent surface evaporation which i dont want much of the time specially for small plants.

                  Can someone explain it to me please?
                  NebulaHaze

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                  • Sonnyhad
                    Sonnyhad commented
                    Editing a comment
                    Reflective material on the grow medium? It appears you know more than you are letting on. I've not read that one yet. And not seen picture even of such a thing. But maybe its a great idea, i don't know.

                  • Royal Nugs
                    Royal Nugs commented
                    Editing a comment
                    I've seen people put things, like paper plates over their growing media, usually hydroton or rockwool to prevent algae from developing. My hydroton always had a little algae in it until the plant completely shaded the media.

                    Maybe this is what you're referring to?

                  • Greenthumb
                    Greenthumb commented
                    Editing a comment
                    By using a reflective material over your growing medium it blocks the light from helping algae grow, it also helps keep my hydro temps down from the light heating up the water in a recirculating system, helps reflect light back at the plant too and that can really make a difference in its growth rate as well. Just my 2-cents.

                • #24
                  Has anyone gone from plastic pot to fabric pot and if so how did that work?

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                  • NebulaHaze
                    NebulaHaze commented
                    Editing a comment
                    I've seen growers do it and it doesn't seem to cause any problems. Just run a stick or something around the edges of the plastic pot to loosen the dirt. Fill the smart pot with soil, but make sure to leave a hole about the size of your rootball. Gently place your plant in the hole (you may need to turn the old container sideways or upside down and pat on the bottom to help the plant come out) without disturbing the roots, and water well

                • #25
                  1 Jack Herer, 3'x3' SCROG, in DWC, 700w Viparspectra LED using Lucas Formula, in day 15 of 12/12.

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