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Thanks! So you say 198lm/w for 3500k @ 0.65mA! I guess it is 0.2w each diode so we need 5 to make 1w so about 40lm per diode? Is it correct? Uniformity is what I am looking for along with efficiency...i use all the surface when I grow...no way to be able to watch the floor...buds carpet!!! Have...

Hi led users!!! I wasn't on RIU for the last 2 years so I missed a lot on tech and products...but I will learn thanks to you guys! So last time I was here cxb3590 3500k CD @1400mA was one of the best option(@700mA would be a better one with twice the cob)!!! I saw there is a DB now so it should...

Thanks! I went on samsug site and to get the higher efficiency from diodes (3500k)so about 36lm per diodes driven at .65mA and 0.2w per diode or chip I will get 36lm x 5(to get 1w)= 180lm/w am I correct? I guess only 5000k give 220lm/w!? It lead me to another question what is the advantage of...

Yes I want to build it but like I said I wasn't on RIU for 2 years so I have a lot to read about qb's and Samsung diodes! I know how cxb3590 can do as I have made a lots of panels @1400mA and 700mA...i know there is a big weight and heat and watering and nutes difference! So I was wondering what...

3"7x3"7...a bit less than my 4x4!!! So 110x110 to cover all the space with light!!! Uniformity!!! I know it is big but if you really use them @250mA so about 25w for 288 diodes it should be awesome!!! I have access to large aluminium sheets so I was wondering if it was possible without...

Hi! Are Samsung diodes soldered on the quantum boards? Is it possible to use another method? Is it possible to find a pcb 3.7x3.7 with 400w of diodes at 200 lm/w(I don't know how many mA they need to be this efficient!?) Thanks!

Did you try todogrowled they are in Spain and have a good reputation and prices! And they have Samsung pcb! I am not sure this design is the best for a 4x4 since it is a single bar and the advantages of led is the coverage! To me the ideal would be an aluminium square a little bit smaller than...

I was out of the led world for 2 years so I guess there is members who will be more usefull on the tech side! On the grow side I can tell you to be prepare to pull the gram per watt and even more depends on your actual skills! I heard that cmh 315w are as good as a 600w HPS and average...

Hi! Nice choice!!! Do you have an HPS atm? If you do prepare to be amazed with your future crops! I don't understand why people still buy HID!??? Have a lifted one

Hi! About Cinderella99 brothers Grimm made the original and seeds are available atm in reg and fem...at a high price!!! They have other strain too! About fast strain sweet seeds have some fast version of a few strain...not autos...i assume there is some ruderalis involved in the genetics to...

Hi! Adding reflector will increase the penetration! If you have 1 COB every ft2 you should use some! I think you need COB holder to add reflector...lens loose 10% light so reflector should be better! What kind of COB do you have? Have a lifted one

Hi growers! The highest gpw I saw (with 6 weeks vegg I guess)was from Growmau5 I guess it was cxb3590 @700mA and he pulled 1.9gpw so in a controlled environment with co2 clones and a perfect nutes plan I believe you can reach a bit more than 2gpw since it was the 3500°k CD and DB are now...

Ok cause you top your plants!?! I don't...never hurt my girls!!! I can do the same thing just by training it bend it pinch it twist it...i am a fan of torture!!! Ok it is much more work but I only need 4 weeks 5 if it is pure indica vegg! My plants looks like an human skeleton chest(spine is the...

Hi growers! I was wondering which song is your favourite!!! I enjoy their music grow style and people around them(like the SOILKING) I really like "now I'm high" "one plant one season" "I'm from the mountain"...! Have a lifted one and lots of good vibes from France

Sorry I just went too fast...don't worry for my math! So it is about 1.3gpw! With a/c hydro system and I bet CO2! I get the same or more without even and extraction just a fan and my COB...and tap water all along!!! I saw cxb3590 pulled 2gpw in organic soil(Growmau5) so in a very controlled...

Very well thank you! I was in Spain growing and building cxb pannels and after 1 year and a half they said thanks we gonna take the guy who follow you since a year because it is cheaper for us and since we can copy everything you did you can go back to France!!! So now I will wait for...

Are you a kind of wizard or something???

Hi cmh users! How many gpw a cmh can pull? Because it is led VS cmh!!! What do we want to know!??? Which system grow more buds!!!! That's it...nuff' said! Have a lifted one and lots of good vibes from France growers

Ok! Nice! Do you have a link to a grow log from someone who pull 315w X 2 = 730gr from it please!!! Why people still DIY led to get 1.5gpw on average??? Newbies pull 1gpw easy with COB! Do they pull 2gpw from seeds with 4 weeks vegg without CO2 and a/c...or is it from clones in a controlled area...

Hi! As an EU resident I enjoy some vids who show cannabis events and new products!!! I don't care about weedtubers who only smoke in front of a camera...i can do it with friends live!!! I like Mendo dope vids and music the SOILKING vids Urban Remo some are interesting and a few more...sorry but...