i think LED better than hps or cmh
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Would you care to elaborate? I’m open to either and aren’t on either “team” but I’ve done CMH grows mainly and it grows trees. Friends running blurples that are supposedly more wattage don’t touch what my CMH produces.
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Agree about them egotistical
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I pull more grams per watt with my blurples than i do with my hps lights
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Same wattages?
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No but the inputs are the same grams divided by watts
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Good to know!
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In my experience hps makes larger buds led makes denser buds they both have benefits i don’t personally like vegging under led as the node spacing is to tight for my preference i like a plant a little more stretched out before flower but its all personal preference
Can’t honestly say one is better than the other as far as bud quality goes i can’t tell a difference other than density and size of flowers
I still believe the best expressions will be found under the sun in any plant
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I’m really debating running both for my next grow and seeing how it goes. It can only help (except for my power bill).
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Blurples are obsolete. It doesn’t mean you can’t grow quality weed with them, just that they are last years technology. I have no experience with cmh but for an apples to apples comparison you should be looking at modern white board LEDs imo.
All the best.
Full disclosure: I run a mid range modern led board and I’m very happy with it.
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I have a 100W (110W) white board LED coming in before my grow that I would be using.
The blurple got more than 3 ounces off an OG Kush auto that was deliberately given no nutes so obsolete or not I was actually impressed! I can only imagine how much better the white board ones are!
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Good high cri (95+) whites at a 3500:4000, 2:1 ratio lighting annihilates cmh on efficacy AND g/w all day.
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Well then both should be quite a show! 
I think the only way to solve this quandary once and for all is to do a side by side where all factors (genetics/breeder, cultivation methodology, training, environmental factors, nutrients, lighting time, etc) are all identical BUT the light. I’d like to do something similar using live soil vs RDWC to squash that beef too. Get verifiable qualitive and quantitative comparisons on each. We used to experiment like this, and the result was innovation, refinement, and far better and bigger buds. I’d like to see this come back. Once I have a second harvest out and I can quit my day job, I’ll dedicate the time to that. I have some experimental shit to work on, too. There’s a very bright future ahead for all of us 
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@KillerKrickit , I am with you 100%!!! That is the only way to make any comparison. Otherwise it is strictly subjective and anecdotal.
I would love to do or be a part of something like that.
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We’ll set something up. I’m in a green state for the first time, so I’m free to display. Never photographed a grow, never did a journal online (half a dozen notebooks though), I’d love to see what has become the king in the interim. I’ve been using a modified undercurrent diy with diy inline pure O2 nano bubble and a custom spectrum I call “doomsday”.
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I started with MH and HPS, then got a little into CFL for veg, then got into CMH and was running with that for a good while. A few years back I switched to LED (quantum boards) and I’ll never go back. The hassle of never having to deal again with bulbs is well worth it to me. I feel I got bigger buds with HPS (volume wise) but the LED gives me more dense and terpy buds, and much more color. I don’t sell so yield isn’t important for the most part. I love being able to dim way down, turn lights off and back on real quick, less heat in the summer. My only beef with LED is that my plants sometimes don’t look as healthy in veg. I found I need to dim them way down at the start, and I started adding a bit more amendments to my recycled soil each round. I’m slowly figuring it out.
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This caught my attention
a custom spectrum I call “doomsday”.
More details please?
After watching the video, while yes, it does cover a wider area, but i dont think LED can penetrate a canopy as well as an HID. They were reading the lamp wrong, if they flipped the light 90 degrees it would have read better for the HID. light doesnt relect well from the front and back of the HID reflective hood, it reads better from side to side unless your using something like a Magnum hood
Regular hoods are flat where the bulb screws in. And the light deviates fast from those ends because light isn’t reflecting off anything.
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Imagine a large object has entered Earth’s atmosphere and exploded, leaving a gaping hole in layer of gases that protect the surface from Ultraviolet radiation, but the hole is rather small and only directly effects any point of the surface for two hours of direct exposure a day. Blues are also enhanced during these times, only in a proportion that shifts back towards the red spectrum drastically. The goal is a period of intense 285nm and 442nm light midday that will trigger the plant’s defensive response and force it to overproduce trichomes while also minimizing internodal spacing and making for a dynamic pigment utilization.
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