Rider's first foray into LED strip lighting - Samsung H Series GEN3

Rider509

Well-Known Member
Doesnt this just mean you will have better penetration? If the ppfd is the same from 12" to 8"?
In the immortal words of @CobKits, "penetration is what you do to your girlfriend." LOL
I wonder why he hasn't been here giving me crap? Beetlejuice, beetle... I mean, cobkits, cobkits, cobkits. :)
 

Eph3m3raL

Member
I gotta agree. Those numbers should make for some very happy plants. And the cost of that build is so fricking cheap!
Eight 44" H Gen3 strips, an HLG-185H-C1050, and a bit of Al. Total costs are under $300 for each 2x4 space of very uniform chlorophyll kicking plant growing light.
What do you think about HLG-240H-C1750A with 3 F Series LT-FB24B? Around $240 watts?
 

InTheValley

Well-Known Member
bro, not counting shit like sandpaper and paint and all the estatics BS, im like $100 in for mine,lol.

total came out to around $200, but that includes hangers, aluminum, bolts, wood,epoxy, fans, wire,shrinktube, extrusions,filler, then extra shit i didnt use, like 2 cans spraypaint, then grommets that were to small, wagos that didnt work as i planned, switchs, meter, timer, think thats it, lol.. Oh, yeah, Growmau puck

You got some high end strips tho, cant beat the price.

You have some beans ready to roll dont ya?
 

Rider509

Well-Known Member
You have some beans ready to roll dont ya?
After a frustrating start, I do! I was gifted 15 seeds from a friend in Hawaii that has a private blend he's been developing for years. Some got crushed in the mail handling machinery (mailed loose in an envelope) and the rest refused to germinate, despite playing the ukulele and singing Don Ho songs to them.
Now I have two Thai strains and G13 that are popping up. Fingers crossed for no males!
 

Rider509

Well-Known Member
Perhaps the HLG-240H-C2100A is better? It's closer to the 2240mA of the FB24B's so you will lose less current and therefore PPF, I believe.
:peace:
The FB24B is a 46V strip. Three won't fit on the 240H-C2100A. The 320H-C2100A would be a better fit and let you wring all the goodness out of those leds.
 

waynejohn

Active Member
I have the same driver and i would use 6 of them, 2 in parallel...i think when i was doing the calc it was around <100mA per diode, less than 50% of what they can manage...the numbers were around 190 lm/w for 5000k 80cri s6, didn't calculate the other colors
 

InTheValley

Well-Known Member
well, good luck bro, hope they work out for ya. I just ordered 2 full spectrum 50w cobs with lenses for flower time, might use them, might not,lol..
 

Rider509

Well-Known Member
I've got my existing 16 cob CXB3590 system for one side of the flowering tent, and two systems of four FB24Bs on HLG-600H-48A drivers for the other. I really wish the Hawaiian Mutt would have germed so I could do a side by side comparison. It'll be impossible to draw conclusions growing three different strains.
 

Eph3m3raL

Member
I've got my existing 16 cob CXB3590 system for one side of the flowering tent, and two systems of four FB24Bs on HLG-600H-48A drivers for the other. I really wish the Hawaiian Mutt would have germed so I could do a side by side comparison. It'll be impossible to draw conclusions growing three different strains.
4 of those lights on a HLG-600H-48A?
So they are running at 3125mA? Or is my math wrong?
 

Rider509

Well-Known Member
Yes, but to clarify, that was measured at the back of the heatsink in several places using an infrared thermometer. I almost went blind trying to get the thermistor on the Tc test point while laying on my back and gave up. It wasn't hot enough to cause me concern.
 

Stone_Free

Well-Known Member
The FB24B is a 46V strip. Three won't fit on the 240H-C2100A. The 320H-C2100A would be a better fit and let you wring all the goodness out of those leds.
Fair point....I'm planning to use only 2 strips in my 4x2 which will be fine for that space and driver. My mistake, apologies.
 

Rider509

Well-Known Member
Fair point....I'm planning to use only 2 strips in my 4x2 which will be fine for that space and driver. My mistake, apologies.
No apologies necessary! I defy ANYONE to be able to keep all of this straight in their brain and ready for error-free retrieval. o_O
 

nfhiggs

Well-Known Member
Can you explain?
Its simple - the further your light source is from a single point source emitter, the more it deviates from the inverse square function. If the light source is spread across the entire grow area, and the walls are reflective/high albedo you actually get very little fall off. Which is a good thing.
 

Stone_Free

Well-Known Member
No apologies necessary! I defy ANYONE to be able to keep all of this straight in their brain and ready for error-free retrieval. o_O
Cheers dude.
I came across this neat PAR/PPF/DLI tool which I *believe* is a very accurate and informative tool for designing a lighting rig. I'm no expert but have spent quite a bit of time using this tool and it seems legit. It's based upon good science and so I'm willing to trust it. Would always be good to have it compared to real results from us growers though.
In an earlier post I mentioned beam angle which is something I picked up from this tool as being very relevant. For info the beam angle of the LM561 diodes is 120 degrees.
If you play around with the settings such as height you can see how PPF/D drops off dramatically over just a few inches. This tells me how important it is to have an even canopy and highlights the effectiveness of a ScrOG style of growing!

Perhaps you and others can have a look and we can discuss it in this thread if you're ok with that? I wouldn't want to hijack your thread dude but I'm sure it is something we can all learn from. Below the link is also a link to a Reddit post which is also relevant.
I couldn't post links so have added them to a .txt file :)
Let me know what you think!
:peace: (:
 

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Rider509

Well-Known Member
Hell yeah, I'm all over new tools. And this thread is all about figuring this stuff out and it's def been a team effort the whole way through. I've learned a ton and am still learning.
 
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