Have any of you DIY COB Growers finished a crop under 1000W DE HPS? - POLL
- Thread starter OneHitDone
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Yodaweed
Well-Known Member
If you don't notice theres not a huge difference if any in frostiness between an LED and HPS that's mainly determined by genetics and grower skill, so the only thing that should matter is price of light, how much it can produce for yield, coverage, and how much electric it uses.
Stephenj37826
Well-Known Member
Still looks decent to me. Let's see what it looks like dry and trimmed. Still yet you guys are gonna hate regardless. First it is that cree cob can't yield then it's quality you'll find something wrong with every Grow under anything but hid every time.
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Stephenj37826
Well-Known Member
Also it's pretty well accepted that quality is genetics so stop with the B.S.
Stephenj37826
Well-Known Member
Yeah no doubt. I've seen stuff that looked like shit that would put your dick in the dirt. I've had WiFi that was the frostiest stuff I ever saw that didn't do shit.
Yodaweed
Well-Known Member
That plant looks like it wants to die, sorry but I wouldn't want to smoke something in that state, most likely would give me horrible anxiety.
Stephenj37826
Well-Known Member
Ahh man it's really dependent on the person. Some of my buddies thought the wifi was great others where like me and thought it was way overrated. Then again they thought super lemon haze was ok but it got me real good lol. I think we all respond differently to the terps. I love just testing all kinds of variety. That's the most fun to me in this hobby. Back in the day I never could dial a strain because it didn't get to hang around long lol.
Yodaweed
Well-Known Member
If you like the super lemon haze you would love golden goat, it's like the most amazing lemon strain ever made. i'm about to grow a cut of my golden goat in this earthbox SIP living organic hydroponic system gonna be so bad ass. Just got the box today gonna take some cuttings tonight.
2ANONYMOUS
Well-Known Member
Here is a 432 watt T5 grow 5 pound harvest you got to believe me cause its true lol no seriously i own 120 cobs of different spectrum waiting on other stuff to come in i have a thread going , on build
But truth is what i think its really not destroying DE units i mean watt for watt you still need 800 watts of cobs to compete with a 1000 watt HPS .. 1000 watts of cobs to compete with a 1215 watt nanolux De unit
So when looking at that and costs to build 400 or purchase a 1000 watt equivalent Cob unit to compete with a DE it comes down to what you want yes with cobs you can play with efficiency under driving them does not mean more yield all you did was pro long the longevity of your unit
over drive them in this case Cree 3590 's and guess what effciency is out the door for instance here i am running 52 percent eff with my cob build what is the other 48 percent ???
Cobs have 0 UV and this most of the times is not addressed and over looked
Bottom line is finding out what will work best for your situation and thats the bottom line i think most diy cob growers have little experience growing with thousands of watts and i say not all but most
I think most are mars previous growers and diy LED growers that are true to this style of light some may have used 1000's / 600's had bad luck and blame HPS
i here cob growers saying that they never got over .45 - .50 with HPS but with LED or cob they surpased that sorry my thoughts on that is your blaming HPS for something you fucked up in the grow cause no matter what 50 is a disaster with HPS no matter how you look at it
here 432 watts of T5 whats your guess i know its well over a pound and over 1.5 pounds and the unit cost 200 bucks )
But truth is what i think its really not destroying DE units i mean watt for watt you still need 800 watts of cobs to compete with a 1000 watt HPS .. 1000 watts of cobs to compete with a 1215 watt nanolux De unit
So when looking at that and costs to build 400 or purchase a 1000 watt equivalent Cob unit to compete with a DE it comes down to what you want yes with cobs you can play with efficiency under driving them does not mean more yield all you did was pro long the longevity of your unit
over drive them in this case Cree 3590 's and guess what effciency is out the door for instance here i am running 52 percent eff with my cob build what is the other 48 percent ???
Cobs have 0 UV and this most of the times is not addressed and over looked
Bottom line is finding out what will work best for your situation and thats the bottom line i think most diy cob growers have little experience growing with thousands of watts and i say not all but most
I think most are mars previous growers and diy LED growers that are true to this style of light some may have used 1000's / 600's had bad luck and blame HPS
i here cob growers saying that they never got over .45 - .50 with HPS but with LED or cob they surpased that sorry my thoughts on that is your blaming HPS for something you fucked up in the grow cause no matter what 50 is a disaster with HPS no matter how you look at it
here 432 watts of T5 whats your guess i know its well over a pound and over 1.5 pounds and the unit cost 200 bucks )
Sativied
Well-Known Member
Schooled me... is there really no level to your pretentious bullshit. Another false claim with no valid arguments to back it up. Just more petty attempts to discredit the one who discredited your nonsense. Gavita folder... Ironic... since all you got is Cree's efficiency graph. Everytime I point out your extreme bias and misleading hyped info you guys meltdown, resort to personal attacks, report like a bunch of butthurt bitches once you upset yourself enough, get the thread locked, and then pretend you schooled me.Got schooled back in the day and he's back for more, don't know why he does it to himself. Everything he spouts is like straight out of a gavita booklet, probably has dreams of being just like the Jair rep one day
"reflector losses aside" "some reflector losses" is far from the truth and has been documented in an intergrating sphere======fact
like I said back then, great marketing and exaggerated #s:
Originally Posted by whazzup
Quote:
Originally Posted by Beta Test Team
An interesting metric I came up with the other day that uses data from this thread is what I called reflector 'photosynthetic radiation efficiency.' This provides the relative percentage of PAR range umol/s that exit the reflector as compared to the PAR range umol/s that is emitted by the lamp.
Just divide the reflector's umol/s per joule in PAR range by the lamp's umol/s per joule in PAR range, and multiply by 100. The lamp's total output is often reported by the manufacturer, as total PPF, or PPF per watt.
I was a bit surprised to learn, for example, Gavita PRO DE 1000W HPS reflector has a photosynthetic radiation efficiency of about 81%, that is, about 19% of radiant PPF emitted by the lamp is absorbed by the reflector/fixture.
https://www.icmag.com/ic/showpost.ph...postcount=6837
It is an interesting measurement, but quite incorrect. What you are referring to is the light output ratio, also called LOR. The 81% is not correct. Send the fixture to a professional lighting company which has a large scale photogoniometer to get the correct results, instead of trying to integrate points on a grid. In fact it is a lot more, but you just can not measure that accurately with an integrated point measurement. Which btw is also discussed in the same paper.
The values are correct, they were measured by a 3rd party accredited lab using NIST certified integrating sphere (for lamp AND fixture irradiance measurements, separately) and the most current protocols. They were not created by "points on a grid."
Just because the values are not what you want to see doesn't mean they're not correct. You have serious biases, which is to be expected, as Gavita is your employer. But that doesn't mean what you're writing is accurate, in fact, it has been proven otherwise (see this thread).
If you have provable data (facts) to refute what I claimed, and can provide their source (not just the values), please post them.
And no, a photogoniometer is not better than using an integrating sphere to calculate that value.
Quote:
Originally Posted by whazzup
It is interesting that you came across LOR "the other day" because that is what professional lighting companies work with and specify all day long. It shows how uninformed you are, and I see you are quoting every time from the same documents and source. As a scientist you should know that you can not rely on a single source.
I didn't "come across LOR the other day," because I thought it up the other day all by my lonesome. I never claimed it was a unique idea. And I have never heard of LOR until your post; I'm a scientist, not a light fixture manufacture.
The 81% value I listed is correct, no matter how much you want it not to be so. Unless you have facts, i.e. data, you can post to refute the claim.
The facts stand for themselves, see the data in this thread, or just use your biases and tell me I'm wrong.
Quote:
Originally Posted by whazzup
LOR is the basis of reflector ratings as in efficiency. Then we haven really talked about spread and uniformity yet, or exit angle of the reflector, or light losses to the ceiling with open reflectors. We haven't talked about how the lamp temperature can influence the lamp voltage and the output of a lamp, and we certainly have not discussed yet why you should change your lamp at 4% depreciation, and not ten, because you are not growing tomatoes in a greenhouse but silver on a stick in a climate room.
And do you know why? Because most of those things are off topic. And yet, uniformity was already discussed, and it's been proven Gavita is lacking in uniformity.
Also, relamping at 4% deprecation sure sound like $$$ to your ears, doesn't it? You talk about photosynthetic efficiency as if it's the most important factor, and then suggest relamping like every 8,000 hours?! Okay, sure. For a large operation with thousands of lamps relamping that often is a financial non-starter.
http://www.lighting.philips.com/main...116_EU/product
To those reading, relamping at 90% (i.e. 10%) is fine, especially when a quantum sensor is used to ensure correct irradiance.
Quote:
You have a lot still to learn.
Look, you're mad that the facts don't equal Gavita's claims and marketing, I understand. But for a company and human (you) that doesn't even know what PPFD means, I think you're a pot calling the kettle black, my friend.
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Our main threads:
I like whazzup, helped me in the past and at least he knows when to shut up (never refuted the data )when he's wrong and defends gavita because HE WORKS FOR THEM. Not like our furry friend who still doesn't own a 1000w DE last I checked for the ultimate irony........just keeps spewing ppf/ppfd/leaf temps from the company's brochure, sad.
also stating to re-lamp a DE bulb at 4%(8000h) is a joke and shows their greed==== ROI on cobs/leds would be quick if that is the case. Including higher umol/j,/ppf/w,LER,QER, this is why the smart cats are in this section.......
time to head for the door and take the "DOERS" with you...........especially the one that compared cobs to driving hybrid cars!lol
I read that same discussion, as I've pointed out in the past I actually know who supra parroted. What is exactly is your point or claim that refutes what I said? Do you think that whazzup losing a discussion and having a case of teacher's curse makes you and your bibled comparisons any less nonsense? As I explained before, someone else being wrong doesn't justify or balance out your bullshitting lol.. Wtf is wrong with you kids... No, me considering whazzup one of many reliable sources of info and he losing that discussion doesn't change the nonsense I refuted in this thread and others into facts.
Did you know they also recommend to replace the reflector every year? Don't pretend I'm some gavita fan to reflect your fan boy behavior on me. I grow with a 1 bulb 600w old magnetic ballast. Admittely I have a "designed by gavita" reflector. It's illegal to grow here you know...
Regardless, you are grabbing my comments about reflection grossly out of context. The whole reason I mentioned them is because intellectual honesty demands I mention that myself even if the list I replied to did not.
""reflector losses aside" "some reflector losses" is far from the truth"
Nope, those are true. Reflector losses aside... Nothing in your parroted results and immature behavior makes that any less far from the truth. In case of the second, you basically create a strawman. 19% (if true still not that 20% I've been hearing in choir..., inflated) is some reflector losses... don't pretend I included a too low number all based on that discussion and not actually the words I quoted.
I replied to examples comparing light sources... already incomplete, adding essential info. When discussing the output of a phillips DE in comparison to led the exact reflectors losses are unknown but I figured it would be fair to at least mention it obviously plays a role. Let's not pretend the lenses and reflectors used with cobs don't reduce efficiency and are free.
So your big words about those quotes being far from the truth is just more bullshit. All you achieved now with your desperate and unsubstaniated attempts to make me a bullshitter like you is showing what a biased bullshitter you are. Again. As usual.
The slanderous greed comment is just douchebaggery... Again desperate to discredit an authority on hps and through you ledlogic than me too. Replacing that bulb every nearly 2 years is very reasonable. Plenty of growers prefer once per year. Obviously that 4% makes enough difference for commercial growers to get a new $100 bulb. As I've said before in similar wording, it's weird having to school a led fan on the importance of 4% efficiency... Let's leave the personal attacks to people who aren't even here out of it. Someone as unprofessional and immatur as you should not be judging people like him.
Do you realize that according to your own ledlogic process you are logically full of shit yourself? Think about it...
a mongo frog
Well-Known Member
With all due respect. I believe a lot can be told at visual inspection. It happens every day in the medical cannabis industry. It was a rock solid harvest, and at that low of wattage is awesome. You've seen Genes Sherbert, blues, and others, you've seen captain morgans glue #4 and chaos i think. Those guys visual were spot on to some serious fucking medical bud.
Stephenj37826
Well-Known Member
I've been told that a few times that I would love golden goat. Hmmmm might have to try some sometime hopefully soon lol.
Yodaweed
Well-Known Member
It's sooo delicious, it's like mentholated lemons and haze with a sweet sprite like aftertaste. Simply a special plant, grows awesome , yields a ton, I love it.
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a mongo frog
Well-Known Member
What happened with the moonshine? The Glue#4 and the Critical look great. The moonshine looks off.
