New german strip

Hi ..seems that the German store led-tech has a new strip.
https://www.led-tech.de/en/50cm-Alustripe-with-98x-Samsung-LM301B-LEDs-3500k-and-connectors
It seem similar to this one, but with connectors
https://www.led-tech.de/en/50cm-Alustripe-with-98x-Samsung-LM301B-LEDs-3500k
But...what I dont understand..is that the new one has better efficiency...althought it seems it have same number and type of leds..
the new one ..at 350 ma 2,97 µMol/joule
the old one at 350 ma 2,82 µMol/joule

Does anyone knows why such a difference?
Thanks

Those arent new. I have some. They grow very well. I also have some of their 25 diode copper square modules. That I have setup like cobs. They are super nice.

I think one has a copper based strip with aluminum the other doesn't. Might cool faster. But they are soldered on the strip the same. So they should put out the same. Might be a misprint.

But Samsung has 112 diodes on their strip as to the 98 diodes o. The ledtechs.

nachooo said:

Hi ..seems that the German store led-tech has a new strip.
https://www.led-tech.de/en/50cm-Alustripe-with-98x-Samsung-LM301B-LEDs-3500k-and-connectors
It seem similar to this one, but with connectors
https://www.led-tech.de/en/50cm-Alustripe-with-98x-Samsung-LM301B-LEDs-3500k
But...what I dont understand..is that the new one has better efficiency...althought it seems it have same number and type of leds..
the new one ..at 350 ma 2,97 µMol/joule
the old one at 350 ma 2,82 µMol/joule

Does anyone knows why such a difference?
Thanks

Click to expand...

I guess their getting a higher bin now?
The ledtech strips are cool, they can be cut every 7 diodes or so and runs at the same voltage. This can give you a lot of play with even spread.

One thing you could do with these strips is to get a very even spread. Each strip has 14 sections of 7 leds each. You could cut the sections for example lets say 8 and 6 sections and then feed it the same current in series. Both parts will run at 20ish volts but the current would get divided differently. Say were using 1.2 amps just for simplicitys sake.

Bigger section: 1200 mA / 8 = each chip will run at 150mA.
Smaller section: 1200/6 = each chip runs at 200, or a 25% boost over the previous section. This side would be closest to the edges to give it a bit of a boost.

I think @Randomblame was talking about something similar but wanted to add lenses instead.

Anyways thought this was interesting enough to share.

Edit: or you could do 4-6-4 for a smaller space but then the side boost is more like 50%.

Rocket Soul said:

One thing you could do with these strips is to get a very even spread. Each strip has 14 sections of 7 leds each. You could cut the sections for example lets say 8 and 6 sections and then feed it the same current in series. Both parts will run at 20ish volts but the current would get divided differently. Say were using 1.2 amps just for simplicitys sake.

Bigger section: 1200 mA / 8 = each chip will run at 150mA.
Smaller section: 1200/6 = each chip runs at 200, or a 25% boost over the previous section. This side would be closest to the edges to give it a bit of a boost.

I think @Randomblame was talking about something similar but wanted to add lenses instead.

Anyways thought this was interesting enough to share.

Edit: or you could do 4-6-4 for a smaller space but then the side boost is more like 50%.

Click to expand...

I have bought 6 strips and built a lamp with those and 18 square osram Deep reds and 6 far reds..what can I say…. those strips are awesome… gonna buy 6 more son. If 2 are joined they are about 98 cms long which are perfect for a 1 meter square tent… light coverage is perfect at the edges.

nachooo said:

I have bought 6 strips and built a lamp with those and 18 square osram Deep reds and 6 far reds..what can I say…. those strips are awesome… gonna buy 6 more son. If 2 are joined they are about 98 cms long which are perfect for a 1 meter square tent… light coverage is perfect at the edges.

Click to expand...

For what space? How hard are you running the strips? Any ideas what wattage these can run without heatsink?
Id love to see your grow, didnt you beat your own yield records lately? (If i remember right you probably beat everyones record...)

I checked the web again and they have more spectrums available now.

nachooo said:

I have bought 6 strips and built a lamp with those and 18 square osram Deep reds and 6 far reds..what can I say…. those strips are awesome… gonna buy 6 more son. If 2 are joined they are about 98 cms long which are perfect for a 1 meter square tent… light coverage is perfect at the edges.

Click to expand...

Do you have reds hooked up?
I am curious as to how they are driven-cooled and sq inches one single square osram will provide enough IR to heat the leaf surface up as much as needed plus of course the light itself which is needed by me too.

oldbeancounter said:

Do you have reds hooked up?
I am curious as to how they are driven-cooled and sq inches one single square osram will provide enough IR to heat the leaf surface up as much as needed plus of course the light itself which is needed by me too.

Click to expand...

660 osram square does not really give any IR. But its a sure as hell flower inducer.

Rocket Soul said:

660 osram square does not really give any IR. But its a sure as hell flower inducer.

Click to expand...

@Rocket Soul
excellent
any thought on how many needed for 25 sq feet growing area? It is part of light trying to build but I am struggling with the red and blue i hope to add the right amount of the osram square in deep blue and hyper red but no idea how to work it out.
If I can then at least i can start the process as takes while to order all stuff needed and hard to find answers with new tech.
Any ideas?
what does give off IR in that line if it does of course?

oldbeancounter said:

@Rocket Soul
excellent
any thought on how many needed for 25 sq feet growing area? It is part of light trying to build but I am struggling with the red and blue i hope to add the right amount of the osram square in deep blue and hyper red but no idea how to work it out.
If I can then at least i can start the process as takes while to order all stuff needed and hard to find answers with new tech.
Any ideas?
what does give off IR in that line if it does of course?

Click to expand...

Hey OBC! Our new most frequent poster! Your questions are maybe a bit of target for this thread. Can i make a recommendation?

Make your own build thread with all the details and tag me and ill help you out as far as i can. If you ask any question anywhere people tend to get annoyed and ignore. Hopefully youll get more traction on your own thread. And one more thing, dont overcomplicate your build, IR and UV is a bit next level and most grow awesome dank the without it. If you make a simple design that you can have up and running in 2 weeks, instead of over doing it and taking 6 months... Imagine all that weed you could grow over 6 months!

Rocket Soul said:

For what space? How hard are you running the strips? Any ideas what wattage these can run without heatsink?
Id love to see your grow, didnt you beat your own yield records lately? (If i remember right you probably beat everyones record...)

I checked the web again and they have more spectrums available now.

Click to expand...

I am going in a expensive but efficiency way… 6 strips total , 3 strings in parallel every string has 2 strips in series... 100 watts total for (588 samsungs!!!) every strip is about 800ma powered...and in every string 6 osram Deep red square and 2 far red well distributed . for the reds and far red a total of 33 watts aprox...
So about 133 watts has the fixture...and I use it for a third of a square meter (1x3 square feet)...very Little área for that beast I know… I use a simple large aluminium large strip as a heatsink for every 2 strips and the reds are glued in this also….
My goal is cover the 3x3 with 3 fixtures...but I have to save cause this is an expensive hobby,...
Will try to post a pic here for you to get a better idea..
I could use the same for half square meter..but..with this 133 watts ...my phone luxometer is giving me about 65000 lux..and the reds and far reds are not very much detected by it so…..more tan 1000 ppfd for sure… I asked randomblame in another thread about how to build the fixture and I follow his advice…
well...as I have been growing several strains mixed, doing some seeds also , canopy management has been much more complicated lately due to diferent heights...growing rates etc... yield has not been as good...but always about 1,3 to 1,5 aprox...best was about 2gr/watt in perfect conditions.
I love quantity but I love quality even more...for that reason I have added uva leds and an arcadia dragon 14% fixture
I have seen the new color kelvin options..in the german store but sadly only in the strips that need to be soldered...
this is a pic of a new plant mix between my sativa elite clon and a CTF male from RM3 under the new lamp fixture and also a personal kush strain mixed with the same CTF male with some heat stress...really big leaves.....2 weeks in flowering..some banding in the pics due to some driver irc interference
I have managed to take a pic of the new fixture....sorry a bout my bad skills in DIY proyects….all is a mess but is working nicely...

nachooo said:

I am going in a expensive but efficiency way… 6 strips total , 3 strings in parallel every string has 2 strips in series... 100 watts total for (588 samsungs!!!) every strip is about 800ma powered...and in every string 6 osram Deep red square and 2 far red well distributed . for the reds and far red a total of 33 watts aprox...
So about 133 watts has the fixture...and I use it for a third of a square meter (1x3 square feet)...very Little área for that beast I know… I use a simple large aluminium large strip as a heatsink for every 2 strips and the reds are glued in this also….
My goal is cover the 3x3 with 3 fixtures...but I have to save cause this is an expensive hobby,...
Will try to post a pic here for you to get a better idea..
I could use the same for half square meter..but..with this 133 watts ...my phone luxometer is giving me about 65000 lux..and the reds and far reds are not very much detected by it so…..more tan 1000 ppfd for sure… I asked randomblame in another thread about how to build the fixture and I follow his advice…
well...as I have been growing several strains mixed, doing some seeds also , canopy management has been much more complicated lately due to diferent heights...growing rates etc... yield has not been as good...but always about 1,3 to 1,5 aprox...best was about 2gr/watt in perfect conditions.
I love quantity but I love quality even more...for that reason I have added uva leds and an arcadia dragon 14% fixture
I have seen the new color kelvin options..in the german store but sadly only in the strips that need to be soldered...
this is a pic of a new plant mix between my sativa elite clon and a CTF male from RM3 under the new lamp fixture and also a personal kush strain mixed with the same CTF male with some heat stress...really big leaves.....2 weeks in flowering..some banding in the pics due to some driver irc interference
I have managed to take a pic of the new fixture....sorry a bout my bad skills in DIY proyects….all is a mess but is working nicely...
View attachment 4338939

View attachment 4338940
View attachment 4338942

Click to expand...

how was shipping-time frame after ordering?
Happy with difference?
I would be, looks like you have a very intense spectrum going there.

oldbeancounter said:

how was shipping-time frame after ordering?
Happy with difference?
I would be, looks like you have a very intense spectrum going there.

Click to expand...

I think they arrived about 10 days after ordering. Germany to Spain via dhl...not quick but its ok.
Yes....what I have notice is an increase in leaf size..but I have to wait until the crop is ready to make conclusions…
What is nice is at this efficiency level...we can veg with about 120 watts in a 3x3 and flower at very high intensities with about 300-400 watts in same área...But what i like is the way light spreads without hotspots

nachooo said:

I am going in a expensive but efficiency way… 6 strips total , 3 strings in parallel every string has 2 strips in series... 100 watts total for (588 samsungs!!!) every strip is about 800ma powered...and in every string 6 osram Deep red square and 2 far red well distributed . for the reds and far red a total of 33 watts aprox...
So about 133 watts has the fixture...and I use it for a third of a square meter (1x3 square feet)...very Little área for that beast I know… I use a simple large aluminium large strip as a heatsink for every 2 strips and the reds are glued in this also….
My goal is cover the 3x3 with 3 fixtures...but I have to save cause this is an expensive hobby,...
Will try to post a pic here for you to get a better idea..
I could use the same for half square meter..but..with this 133 watts ...my phone luxometer is giving me about 65000 lux..and the reds and far reds are not very much detected by it so…..more tan 1000 ppfd for sure… I asked randomblame in another thread about how to build the fixture and I follow his advice…
well...as I have been growing several strains mixed, doing some seeds also , canopy management has been much more complicated lately due to diferent heights...growing rates etc... yield has not been as good...but always about 1,3 to 1,5 aprox...best was about 2gr/watt in perfect conditions.
I love quantity but I love quality even more...for that reason I have added uva leds and an arcadia dragon 14% fixture
I have seen the new color kelvin options..in the german store but sadly only in the strips that need to be soldered...
this is a pic of a new plant mix between my sativa elite clon and a CTF male from RM3 under the new lamp fixture and also a personal kush strain mixed with the same CTF male with some heat stress...really big leaves.....2 weeks in flowering..some banding in the pics due to some driver irc interference
I have managed to take a pic of the new fixture....sorry a bout my bad skills in DIY proyects….all is a mess but is working nicely...
View attachment 4338939

View attachment 4338940
View attachment 4338942

Click to expand...

Very nice, i think your well over 1000ppfd, 10w of osram square per sq foot is already 300ish ppfd.
We managed 2g/w with our first monocrop but it was wintertime and we were burning sooooo much butano (for heat, nigh and day) that the CO2 burner didnt go off once in 11 weeks.

What i find more impressive is your g/sq foot: 133w x 2g/w ÷ 3 square foot is 266÷3= over 80g per square foot!

The arcadia: have you found a good price in spain? We are thinking about adding some, at least to try.

All in all very impressive

nachooo said:

I am going in a expensive but efficiency way… 6 strips total , 3 strings in parallel every string has 2 strips in series... 100 watts total for (588 samsungs!!!) every strip is about 800ma powered...and in every string 6 osram Deep red square and 2 far red well distributed . for the reds and far red a total of 33 watts aprox...
So about 133 watts has the fixture...and I use it for a third of a square meter (1x3 square feet)...very Little área for that beast I know… I use a simple large aluminium large strip as a heatsink for every 2 strips and the reds are glued in this also….
My goal is cover the 3x3 with 3 fixtures...but I have to save cause this is an expensive hobby,...
Will try to post a pic here for you to get a better idea..
I could use the same for half square meter..but..with this 133 watts ...my phone luxometer is giving me about 65000 lux..and the reds and far reds are not very much detected by it so…..more tan 1000 ppfd for sure… I asked randomblame in another thread about how to build the fixture and I follow his advice…
well...as I have been growing several strains mixed, doing some seeds also , canopy management has been much more complicated lately due to diferent heights...growing rates etc... yield has not been as good...but always about 1,3 to 1,5 aprox...best was about 2gr/watt in perfect conditions.
I love quantity but I love quality even more...for that reason I have added uva leds and an arcadia dragon 14% fixture
I have seen the new color kelvin options..in the german store but sadly only in the strips that need to be soldered...
this is a pic of a new plant mix between my sativa elite clon and a CTF male from RM3 under the new lamp fixture and also a personal kush strain mixed with the same CTF male with some heat stress...really big leaves.....2 weeks in flowering..some banding in the pics due to some driver irc interference
I have managed to take a pic of the new fixture....sorry a bout my bad skills in DIY proyects….all is a mess but is working nicely...
View attachment 4338939

View attachment 4338940
View attachment 4338942

Click to expand...

Thats great! Im planning something similar. Except one less 730nm per sq ft, but adding 2 630nm per sq ft. What do u think is the ideal distance between the top of canopy and the 660nm diodes, 6 per sq ft, 1.5 watts per? Im wondering how far the reds have to be under those parameters to not cause the plant stress.

oldbeancounter said:

how was shipping-time frame after ordering?
Happy with difference?
I would be, looks like you have a very intense spectrum going there.

Click to expand...

im in the u.s. my buddy received our order delivered to his house in about ten days after payment was made. They had the package out the door for delivery within 24 hours of receiving payment.

Rocket Soul said:

Very nice, i think your well over 1000ppfd, 10w of osram square per sq foot is already 300ish ppfd.
We managed 2g/w with our first monocrop but it was wintertime and we were burning sooooo much butano (for heat, nigh and day) that the CO2 burner didnt go off once in 11 weeks.

What i find more impressive is your g/sq foot: 133w x 2g/w ÷ 3 square foot is 266÷3= over 80g per square foot!

The arcadia: have you found a good price in spain? We are thinking about adding some, at least to try.

All in all very impressive

Click to expand...

Sorry, when I was talking about 2gr/watt It was achieved with another light fixture (vero cobs)...but yes it was impresive...after weight it I could not believe it...was 560 gr in 6 square foot more that 90 gr per square foot…
Ihave to say that I added some Co2 and a very hard work with the canopy management...which I think it was really the key to succeed….Last time with several strains and less canopy work I got about 70 per square food..which is not bad

For the arcadias in Spain:
https://artroposfera.es/tubos-fluorescentes/2553-arcadia-pro-t5-uvb-kit-dragon-14-uvb-varias-potencias.html#/tamano-39w_86_5cm

But I think I pick the last one ….at least in the médium size

90 is f-in awesome. 70 aswell.

G/w: i feel its its less relevant these days. Our 2/w was on a 11 week amnesia, they get almost 50% more light than a 8 weeks strain.
But then again, we light starve the plants during 3 week stretch to minimise stretch in order to get the plant/budstructure we want. So in the end its its only 8 weeks of flower intensity and 3 weeks at around 12000lux. How do you factor in these things in g/w??

Also theres a tendency for g/square foot to go down as g/w goes up: lower total yield allthough higher G/w.

Arcadias: nice link, the largest one seems reasonably cost efficient. The smaller, 60€ for 24w, damn uvb leds is almost cheaper.