cree

This may seem a basic question: A single COB has a viewing angle of 115°, which means it emits a cone of light from the surface downward, and depending on the distance from the source, produces a "circle" of light of a certain size at maximum brightness which decreases in brightness outward. Is...

Strain: TGA Chernobyl Medium: California Substrates Coco Coir Containers: 7 Gallon Tent: 4x4x7 by Hydrobay Lights: http://www.cutter.com.au/proddetail.php?prod=cut2903 (10" cob spacing, bar is 2 feet across) Light Schedule: 18/6 @ 100% of potentiometer (420+ watts from the wall), 2 ft distance...

... sorry for double post i meant to edit thread title. how do i delete this

Any difference? Let's not discuss mixing. I mean strictly 3500k vs 5000k/6000k wondering if I should go with 5000k on my next grow light, not necessarily wondering what is best. I like the visual appearance of 5000k and if there is no real difference then i might just go with that.

After a hiatus from the grow world, this muppet is back to ruin your day once again! Lots of grow light threadz/questionz going on, and ill be the 1st to admit im a bit of a simpleton when it comes to the tech side of thingz....so figure ill contribute in my own selfish way. Got a mixture of...

hi all, let me start by saying that i have no intention to get spoonfed (the next time lol) i will do all my research after that, i have just some questions before i start my journey of a cannabis grower :) i'm a complete newbie and i would like to start growing with leds, i watched Gromau5...

Hi there, I am in the middle of building a light for a 2x2 tent I plan on having and I already have the Idea and set up started. Basically I am using 4 3590 Cree's and will be mounting them to a 12' x 12" 1/4 thick piece of Aluminum Plate and using 4 heatsinks with fans...

I am vegging currently with 4x CREE CXB 3590, in Hempie buckets. I did some calculations (I will be flowering outdoors!) that I need to wait until June 1st to put them outside, otherwise they would re-veg. "Problem": The plants grow at an insane speed and I I have to look that I somehow can...

Hey! So this will be my first thread, and also quite a big deal for me, as it is about my first COB LED build. I am excited, to say the least. I am still gathering parts to put it all together, but I am close to being ready, and I wanted to share it with you all. I have to credit @Growmau5...

Im building my first 200W Cree LED COB bar. Its going to basically be built the same as @Greengenes707 build with a few variants. If you are looking to build a bar & haven't seen his 200W tutorial build -you should. This is pretty much a personal test and will grow into a larger build if I...

Hello, I was thinking of (instead of going on-grid via the electric company) converting part of my garage to a battery array. I did some research in reference to Series (increase the voltage) and Parallel (increase amp hours) setups. I'm also going to conduct a DIY LED with COB Cree's. The LED...

First off let me say hello, I've been lurking (and learning a lot) for a while but this is my first post. And so to business... Following advice from a lot of the knowledgeable members on this forum I set up an LED grow using 4 Cree CXB3070AB 3000k and a Meanwell HLG185H-C1050B. I got the setup...

How do the new nichia cobs perform compared to the latest cree, vero or lumileds gen3 for a smaller size LES (~15 mm) ? I did some quick calcs based on the data sheet which implies ~168 lumens (5070 lumens, 860ma, 35.1 Vf), which is not too shabby. spectrum is similar to a cree 3070. Opinions...

Hello all, still getting used to the whole Cree COB lights and how it all works but im starting to get the ball rolling, for personal and financial reasons DIY is most likely out of my options (for now).I have come down to two choices. The grow area: 4x4 scrog with 6-8 plants. Number one...

Please do anybody know where can I get vero v29 for cheap in the EU?

Hi all. Thanks ahead of time for your feedback. I have an older led fixture with 16 cobs (some of which have failed) and I want to replace them with Cree CXBs. The drivers aren't a great match for Crees as far as I know... they are 550 mA constant current and voltage says 55 - 70v. What...

So I've decided on buying some cree led chips? I've settled on the CXA3070 @ 700mA @ 6500K? And the XM-L2 @ 3000K?. THe cxa's I was advised to use an HLG120, @ 700mA. The xm-l2 its calling for a couple mean well lpc60-1750s. Total there will be 22 leds on my setup. A total of 16 xml2's. And 6 of...

I have a small grow area approx. 120x60cm (4x2') with 4x CXB3590 driven at 1650mA w/ lenses. Besides some recent bug problems (spider mites...) my plants are doing ok. Thinking that the CXB3590 provide all the light for my area (even too much in same cases) I started new seedlings at the...

I mistakenly bought a lpc150-2450. Besides being 220 and the ability to blast a single cob, what can I do with it. I was thinking of turning into a veg light via parallel wirering. @2450 it's 31~62vdc. If I have four strings at 600ma does my vdc increase to 145vdc.

Hello everyone, Welcome to my grow journal, please feel free to chime in whenever you want for this is my first legitimate and financially sound grow. Every other time has been rando seeds, rando dirt, and tap water XD. After watching countless videos and reading forums I bought my supplies...