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Thread: HPS to LED guys

  1. #21

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    It used to be said that led was the future but cmh is the present. It's looking like the future is here.

    I replaced hps with cmh, no complaints. The cmh vegging lamp must be bluer than blue. The one time I tried it, the plants grew to 12+" diameter and only a few inches tall. Ideal for growing under the bed.

    That's where led is going to win imo. The red/blue ratio affects the shape of the plant. If we can adjust that ratio on the fly, we can control the shape of the plant to suit our setup.

    I got to playing with numbers on running costs. A 600w resin sealed magnetic ballast hps has a draw of ~690w. 2 x 315w cmh has a draw of 640w. If only bought for power saving, it would take the cmh a long time to pay for itself. 50w for 84 hours a week is 4.2 kw/hr. A saving of ~£0.71 per week of 12/12.

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  3. #22

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    Quote Originally Posted by Farmer Geddon View Post
    It used to be said that led was the future but cmh is the present. It's looking like the future is here.

    I replaced hps with cmh, no complaints. The cmh vegging lamp must be bluer than blue. The one time I tried it, the plants grew to 12+" diameter and only a few inches tall. Ideal for growing under the bed.

    That's where led is going to win imo. The red/blue ratio affects the shape of the plant. If we can adjust that ratio on the fly, we can control the shape of the plant to suit our setup.

    I got to playing with numbers on running costs. A 600w resin sealed magnetic ballast hps has a draw of ~690w. 2 x 315w cmh has a draw of 640w. If only bought for power saving, it would take the cmh a long time to pay for itself. 50w for 84 hours a week is 4.2 kw/hr. A saving of ~£0.71 per week of 12/12.
    That's part of why I was looking into LED,if HPS wastes 40-70% of energy on heat and unusable light then I'm saving straight away with LED,and with 2 boards I can use 1 turned down for veg,and in flower maybe run both boards at 200w each which is using 244w less combined that my 600w HPS,and for growing autos that saving will soon add up.

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  5. #23

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    Hey scootb.
    Take a look at these two videos on youtube, and then feel free to argue that HPS is more worth it.

    This one shows the setup, which lights are being used and so on.


    This one shows the dry yields from the grow from the respective lights, you'll see that the LEDs outperform the HPS by a long shot in regards to grams per watt.



    Haven't spent time on here in ages, so I hope I'm not breaking any rules by linking to those.
    If that's the case, I can always PM you the links.
    Last edited by IceCalibur; 12-09-20 at 06:39 PM. Reason: Embedded videos

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  7. Default

    Quote Originally Posted by DaveyJones View Post
    Hey scootb.
    Take a look at these two videos on youtube, and then feel free to argue that HPS is more worth it.

    This one shows the setup, which lights are being used and so on.
    https://www.youtube.com/watch?v=4Ert...has_verified=1

    This one shows the dry yields from the grow from the respective lights, you'll see that the LEDs outperform the HPS by a long shot in regards to grams per watt.
    https://www.youtube.com/watch?v=z9gdoTO3_kw


    Haven't spent time on here in ages, so I hope I'm not breaking any rules by linking to those.
    If that's the case, I can always PM you the links.
    Those particular youtube links are fine, and I've embedded them for you

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  9. #25

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    Thank you!
    I found them very informative, and IMO they clearly show there is a benefit to using LED, despite the higher initial cost.

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  11. #26

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    I need get myself some LED`s

    Sent from my SM-G975F using Tapatalk

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  13. #27

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    Quote Originally Posted by DaveyJones View Post
    Thank you!
    I found them very informative, and IMO they clearly show there is a benefit to using LED, despite the higher initial cost.
    Thanks bud,those videos are pretty impressive.
    It's been hard to wade through alot of the sales B/S when it comes to LED's,I remember the hype about them around 10years ago and the disappointment which is why I had started this thread,it now however looks like LED lights are the way to go,obviously I have done some research into them and had to try sift through the B/S from manufacturers and the bias from some growers on both sides of the fence lol which is why researching LED's can get so frustrating to someone who hasn't tried them out.

    I had already decided that I was gonna try out LED lights after doing my research and seeing some f'ng impressive grows,so I am glad that I have taken the next step and ordered my quantum boards those videos that you posted have got me even more excited about starting my first LED grow now haha.

    It is impressive how an LED drawing 600w can outperform the trusty 1000w HPS,that's 400w difference not to be sneezed at I am guessing that 350w-400w of LED should outperform my 600w HPS in energy savings and in yield I also have my HPS in a cooltube which I know also reduces efficiency .

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  15. #28

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    Glad to hear you enjoyed the vids, the results are really impressive.

    Im not surprised in the least that LED will stomp on anything else watt for watt, because they are much more efficient and put out a lot more light per watt.
    There is a reason pretty much all household bulbs you find in stores nowadays are LEDs, they're simply so much better than the alternatives.

    Im not saying HPS lights are bad for growing, we have seen some people on here pull amazing yields with them, but they will never beat a good LED panel watt for watt when it comes to putting light on your plants.

    Both have pros and cons, and it all boils down to personal preference at the end of the day IMO, great results can be had with both of them.

    Sent from my G8441 using Tapatalk

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    I will add this in regards to my personal experience with LED so far..


    As some of you may know, I purchased a HLG 550 v2 Rspec roughly a year ago..and although I must say they're super strong, (so strong they really do have a learning curve to get used to)..I have to explain a major negative that I have noticed...


    For some reason or other, they are simply not giving enough heat in my tent..I had to purchase 2 x 80w tubular heaters to keep it around 24c-25c when my passive air is 20c even with my extraction reduced down to 25%.

    Now when you add up the watts to include the heaters...I'm really not saving anything on the old leccy, quite the opposite..I'm actually using more, unfortunately.

    Performance, as I say, is spectacular..but it's not without it's negatives.

    The LEDS were fantastic during the hot summer we had..but I might be packing them away for winter and reserving them for summer grows only.


    I'll also add that this may not be the case for everyone!...but I have noticed many members using heaters with their LEDs.

    The current general consensus is that temps should be as high as 28-30c with LED's which make it worse (for me).

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  19. #30

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    If you really want to be convinced about the efficacy of LEDs just search how many commercial growers are using them in the US. Some growers have even figured custom light cycles for their plants and they have them on computer-controlled lights, all of my lumigrows can be controlled by one central computer.



    J

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