LED and BUD QUALITY

[GoatCheese]

I’m done with this thread. I’ll leave you guys to it.

The person who started this thread hasn’t even returned to comment prolly cause it’s such shambles from the start, has anyone even noticed.

 

[Ca++]

@Ca++ - I think we are not so different. At least we both have some zerms in common.
Sticker beside - it might be fell off but that has nothing to do with the light itself.
They are not beauties, but cheap and longlasting, I can repair myself if needed. They do their work

Earlier in the thread, I tried to kill the lumen discussion with...

Do Samsung, makers of the most popular grow LEDs on the market, talk of output in lumens? At all?

I thought you were having a bit of banter with me, showing that pic.
It was quite funny from a UK prospective. As we both understand the topic, so disagreement can only be playing devils advocate.

We can't disagree, it's standard index stuff. You can surely see the practical limitations of calculating ppfd from ppf at the edge of installations, where manufacturers are being pushed to make special fittings. We are just not talking about a lot of things, so as not to muddy the waters. We can see who gets it though. Even if our attempts at explaining it are not working.

 

[Ca++]

thanks snipp for showing those readings at differing heights. we will still have folks thinking they can measure at the light.

we have folks thinking i'm talking about lumens for plants when i never said anything like that. i was just trying to get everyone using the same terminology so that then we could have a meaningful conversation.

the thread title is "led and bud quality" and that's why i showed my 1680 watt light.

i built my light before fohse came out with their A3i. and as all can see who looked at the link their idea is to use thousands of small diodes instead of a few large ones. i doubt anyone read it.

i post a link to surna showing basic definitions of lighting terms and no one reads it.

so it looks to me that some folks just get their jollies trolling.

this is one of the reasons i have avoided icmag for the last few years. it has become a destination for trolls.

Nobody has said they can measure at the light. People have spoke about the measurement spheres used in testing. The ppf of a lamp is what we are told.
You were saying lumens are the measure of light leaving the lamp. While umol was canopy. That's not getting everyone to use the same terminology, or true.
I can fetch links, but it's in the last few pages.


People explaining you are posting inaccurate stuff, isn't trolling.

 

[Snipp]

Earlier in the thread, I tried to kill the lumen discussion with...


I thought you were having a bit of banter with me, showing that pic.
It was quite funny from a UK prospective. As we both understand the topic, so disagreement can only be playing devils advocate.

We can't disagree, it's standard index stuff. You can surely see the practical limitations of calculating ppfd from ppf at the edge of installations, where manufacturers are being pushed to make special fittings. We are just not talking about a lot of things, so as not to muddy the waters. We can see who gets it though. Even if our attempts at explaining it are not working.

Had to google banter

I don't want to mess or insult anone..
I am a good guy

 

[Ca++]

well, the surface area can change. for quality, i put it on a 4x4 or a 5x5. i just did a pheno hunt with 30 plants with 4 in the pool and the rest in containers all around. it grew them all out just fine for testing. i would guess that area to be about a 10x10'.

i gotta go now i only have 3.5 hours to plot this for you guys.

Just explain what you are trying to prove.

 

[Snipp]

He wants to measure many different spots to test how the ppfd are spread over the whole plac.
And 1700 watt covers a lot of space

 

[chilliwilli]

the lip on the bottom holds about 1/3rd a shot of liquor, amazingly or it did 25 years ago…

We’d fill it with Vodka etc, you had to sniff it down, damn looser…

Chilliwilli….

Sniff like through your nose?
I have done this once as a 17y old teenager. 3 or 4 shots tequila over 2 hours kept 4 of us wasted. Next day was very bad with a lot of nose bleeding.

 

[delta9nxs]

my dear ca++, first i never said that you measure a light with lumens. please quote where i said that. i was merely trying to get everyone to talk about this in plant lighting terminology. just like you. i agree with your posts on this subject except where you misquote me.

 

[Ca++]

He wants to measure many different spots to test how the ppfd are spread over the whole plac.
And 1700 watt covers a lot of space

So instead of using the SI unit of a meter, he is going to pick his own area and give us an average of his spot readings.

Oh, I see your still here D9. Tell me the space and light, and I will tell you your result while you are still measuring. That ought to show you it's calculable.

 

[Snipp]

This is a not so bad idea at all. .
Good to see we get on a adult discussion level.

 

[delta9nxs]

and so, in the center ring we have some clown fucking around with trying to grow weed.


the first to show materials and methods

the second shows i measured these at 18" because that's where the net was.

the third shows growth since yesterday. yesterday's pic is somewhere in here.

the actual readings done fast and rough.

they are much more even with the reflectix curtain on.

the pvc frames are 50" apart for reference.

 

[Snipp]

In the meantime - my seedling and first weeks box. Just showing, nothing to say..

 

[Snipp]

and so, in the center ring we have some clown fucking around with trying to grow weed.


the first to show materials and methods

the second shows i measured these at 18" because that's where the net was.

the third shows growth since yesterday. yesterday's pic is somewhere in here.

the actual readings done fast and rough.

they are much more even with the reflectix curtain on.

the pvc frames are 50" apart for reference.

That how its measured.
I only have an app wich app reads it with the smartphones lightsensor.
Not so accurate, but handy.

 

[Snipp]

And veg time

 

[Ca++]

my dear ca++, first i never said that you measure a light with lumens. please quote where i said that. i was merely trying to get everyone to talk about this in plant lighting terminology. just like you. i agree with your posts on this subject except where you misquote me.

I didn't say you said that.

I see I have replied to you a few times. Often I'm unaware of who I'm replying to, as it's more about content for me, than who said it. I'm going to have to say, Your continued efforts here are notable. While others have exited with posts I'm not even going to read, I have listened to what you have offered, which says a lot to me about your discussion standards. I like you, even if we don't come to any agreement.

Perhaps I was reading a little in to what you said

throughout the light industry, no matter what the market or intent, lumens are strictly a measurement of light at the source, the luminaire itself.

micromoles or umols. are strictly a measurement of plant available radiation at the TARGET.

no plant gets lumens and no light produces micromoles at the source.

The use of the word strictly, looks to me, like separating the two. However, it doesn't exclude the other. However, you do close with a quite definite comment, that no light produces umol. Which does look like you went to some effort to say lumens at the lamp, and umol at the plant. Which is nonsense.
Lets look at your link, to see how clearly they put it

• Micromole: a way to measure the amount of a substance, or in this case the number of photons passing through a target area, one micromole of light equals just over 62 quadrillion photons

Did they say umol wasn't a measure at the lamp? That is what you seem to be saying. Quite clearly. Telling us we have not read your link that explains this in later posts.
I was mixing umols the other day. In that case, it was acids. That doesn't mean it's only for acids though. All that link writer has done, is say how they will use the term. It's misleading, but works in context.


Have I been wrong to question any of this. To be seen as trolling. I don't believe I have strayed from the truth at all.

 

[Snipp]

Shake ️ .
Love and peace

 

[delta9nxs]

@Snipp your plants look healthy. and meters are expensive. i wish i could afford a licor. but at my level it's hard to justify the expense.

the app you are using is good enough as a relative reference tool. you see your plants look good you check the meter and learn about where the sweet spots are. that's good enough.

 

[Snipp]

My first Led - before I informed myself a bit..

 

[delta9nxs]

@Ca++ i never thought you were trolling. i realized we were discussing terminology. we should not have had to do it at all but some folks really are trolls and feed off this kind of discussion.

 

[Snipp]

Not much to do...