There is just too many parameters kicking around.........From my experience with UC Davis and University of Wageningen when researching and developing CA (controlled atmosphere) storage, we saw exactly the same........and just like LED light, CA works, but how to optimize and reduce cost is the ever elusive holy grail.....if indeed any ONE holy grail exists!
Lighting Bilbo's Brief Guide to Choosing Your LED.
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There is just too many parameters kicking around.........From my experience with UC Davis and University of Wageningen when researching and developing CA (controlled atmosphere) storage, we saw exactly the same........and just like LED light, CA works, but how to optimize and reduce cost is the ever elusive holy grail.....if indeed any ONE holy grail exists!
That sounds interesting, no greenhouse sunlight and clones of the same plant?
With the same genetic material and same conditions there should be similar results.
What are his suspicions for the cause?
And with hps there no such thing?
Isnt that too because of the differences in plant species? Light senstive proteins trigger plenty of different reactions that can be very different from plant to plant.
Foodcrops are usually grown in greenhouses, are they not. So there you need just some supplementation of light with more specific wavelengths while Cannabis is grown indoors usually without sunlight.
Makes it difficult too to find common ground for a light source.
Exactly what kind of leds are you using in your led cobs at which current? Do you have a datasheet?
Corgy, whats a controlled atmosphere storage - some kind of growth chamber? And what did you see?
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Hey,
I'm new to this forum. I been advocating LED lights for awhile to my fellow growing friends. I find this discussion interesting. However, for me, some of the par value and other information starts to overwhelm me, especially when I've medicated. I'm a bottom line type of person. I want to see what the results are from the grow. The wide variability in LED lights undermine their acceptance. I've grown outdoors for many years. I've decided to move in doors and grow autoflowers under LEDs. My quest for the most effective LED for my needs is ongoing. My previous grow was done under 2 Advanced 100 watt XTE lights. I started with 1 and added a second as flowering started. (Results are shown below). I did a deep water culture grow (DWC). The strain I used was Auto Purple from Pyramid seeds. The results were mostly good. However, the taste was not up to par and the lower buds were not as dense as they could of been. The taste I attribute to hydro and airy lower buds to a lack of effective light penetration through the canopy. I decided I needed more powerful light. Advanced allowed me to return my lights for a full refund. While waiting for my refund, I discovered that California Light Works has a program called the Growers Feedback Program (GFP). If you are accepted by them you are allowed to purchase any light that they sell for half price. I've purchased the Solar Flare 440watt fixture. In addition to the leds it has 2 fluorescent UVB bulbs for flowering enhancement. My grow is just starting and I'm looking forward to seeing the results. In summary, most LED lights will produce enough light to grow the plant. However, in general, to get really great results, the more wattage you can provide to your plants the better the results.
Peace,
JAS
I'm new to this forum. I been advocating LED lights for awhile to my fellow growing friends. I find this discussion interesting. However, for me, some of the par value and other information starts to overwhelm me, especially when I've medicated. I'm a bottom line type of person. I want to see what the results are from the grow. The wide variability in LED lights undermine their acceptance. I've grown outdoors for many years. I've decided to move in doors and grow autoflowers under LEDs. My quest for the most effective LED for my needs is ongoing. My previous grow was done under 2 Advanced 100 watt XTE lights. I started with 1 and added a second as flowering started. (Results are shown below). I did a deep water culture grow (DWC). The strain I used was Auto Purple from Pyramid seeds. The results were mostly good. However, the taste was not up to par and the lower buds were not as dense as they could of been. The taste I attribute to hydro and airy lower buds to a lack of effective light penetration through the canopy. I decided I needed more powerful light. Advanced allowed me to return my lights for a full refund. While waiting for my refund, I discovered that California Light Works has a program called the Growers Feedback Program (GFP). If you are accepted by them you are allowed to purchase any light that they sell for half price. I've purchased the Solar Flare 440watt fixture. In addition to the leds it has 2 fluorescent UVB bulbs for flowering enhancement. My grow is just starting and I'm looking forward to seeing the results. In summary, most LED lights will produce enough light to grow the plant. However, in general, to get really great results, the more wattage you can provide to your plants the better the results.
Peace,
JAS
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Yozhik
INTJ & Non-Violent Domestic Extremist
Exactly.
This very same quest is what caused me to stumble over some brilliant online info re: building a DIY COB setup - which I simply do not have the skillset to undertake.
Why DIY COB?
DIY because you have total control over the parts, and its cheaper.
COB because it seems to be the direction the LED technology is heading, and the efficiences can't be beaten.
The fact that I can't do DIY, and my belief/faith in COB technology, is why I ended up buying 2 x GroGlo 600w lights, soon to be delivered, for my upcoming cherry popping indoor adventure.
Do they satisfy my hunger for the most effective LED for my needs?
Only time - and a successful 1st grow - will tell.
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They look and sound great. I expect you'll have excellent results. For me, I'm growing in a 3x3x7 grow tent. The 440w produces a good deal of heat. Hopefully the 600's will have modest heat.
One main concern I have when buying an LED is the warranty and the willingness of the manufacture for a full refund return for lack of satisfaction with the product.
I wish you well with these. At over $2,000 for both lights, you're jumping in with both feet. I hope you do a grow journal.
Best,
JAS
Yozhik
INTJ & Non-Violent Domestic Extremist
It came down to the size of the room, and budget.
For 150 x 300 tent;
Grow Northern recommended 8-10 x HS1 = £2800-£3500 RRP
Mars-Hydro recommended 10 x 400w Mars II = $2130 RRP
GroGlo recommended 2 x 600w switchable = £1442 RRP
Will definitely be doing a Journal !
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I dont think thats true. Cobs are not good/superior in general.
You can get them for as low as 5$ a piece from alibaba for a 100W white version. Like 20$ for a multicolor chip that just "looks" likes those on the groglos, its still bad compared to e.g. CXB3070.
You can just easily go to digikey and buy 200lm/W single leds cree chips.
What it comes down too are the individual chips that are built into it.
What it comes down to are the datasheets of the leds or cobs.
E.g. what I dont like so much about HS1 is the price compared to what you get, on the other hand with their transparency about the chips you can see that you get good stuff, if you know what to look for.
Compared to that, like with e.g. mars hydro, you wont get any datasheets because what they use is lowest generic quality of Chips, actually partially worse then hps, -but they are low cost, so its quite fair.
So imho the most imporant point for making a decision is transparency, bc there are a lot of sellers that will sell you MHyd quality for a premium.
Yozhik
INTJ & Non-Violent Domestic Extremist
Sry or maybe I misunderstood, but I wasnt saying that COB should be your first choice, because there are very crappy ones aswell.
I said looking at the datasheet/data of the cob of choice (vs cost) should be driving the decision.
So between your 3 choices id say:
HS1 good but too expensive for what you get.
MHYD, more of an HPS substitute
Groglo ?????? no data
I said looking at the datasheet/data of the cob of choice (vs cost) should be driving the decision.
So between your 3 choices id say:
HS1 good but too expensive for what you get.
MHYD, more of an HPS substitute
Groglo ?????? no data
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Yozhik
INTJ & Non-Violent Domestic Extremist
As with anything.
You specifically mentioned the CBX3070 ... I was agreeing in general ...
As with any purchase.
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