After sifting through my posts, I realized that I’ve neglected to write something that’s a little more suitable for somebody who’s brand spankin’ new to the world of LED COBs. This guide will serve as a short introduction to the basic elements of COB LED lighting systems, and is a good place to start if you’re looking to make the switch from other types of lighting, or if you’re new to indoor gardening altogether.
COB LED systems are actually quite simple – there are only a handful of different parts, and they all go together pretty easily. The main components of a COB LED system are:
The COB LEDs themselves
Heat sinks that the COBs are mounted to
LED drivers that power the COBs
The wires that interconnect the COBs and drivers.
Not so bad, right? Let’s delve a little further in.
Time for another quick guide. In this one, I’ll go over how to use a digital multimeter to check 2 important characteristics of your LED COB circuit: voltage and current. If you haven’t worked much with electricity, I’d recommend brushing up on the very basics, so you can minimize your risk of zapping yourself. These circuits can be very powerful and you need to exercise caution when working with the voltages and currents inherent to high-powered LED systems. Be careful!
When you’re picking your components and planning out your system, it’s very important to match your LED COBs with a proper driver. The goal of this guide is to get you comfortable with the basics involved with planning a simple system. If you’re brand new to growing with LED COBs, I’d recommend reading our COB LED Basics for Beginners article.
After you’ve read through this post, take a look at the DIY Guides page for a list of more specific and advanced guides and resources.
Selecting COBs
Popular Models
When it comes to COBs for indoor growing, the majority of people are currently using 1 of 3 proven brands: Cree, Citizen, or Bridgelux. In my opinion, if you’re looking for low-current efficiency and aren’t overly concerned with cost, go with the Crees. If you’re looking for a good all-around COB that’s easier on the wallet, or intend to drive your COBs with more current, go with Bridgelux or Citizen.The new gen. 7 & SE Veros and Version 6 Citi’s are really closing the gap in terms of efficiency, and can be found considerably cheaper (here in Canada, anyway).
Currently, the most popular COBs from Cree are the CXB3070 and CXB3590 models, with the 3590s being the best Cree offers for this application. The 3070 is a good alternative, and, while not cheap, is less expensive than the 3590.
The Bridgelux COBs used by most indoor gardeners are from the Vero Gen.7 or SE Series. There are 4 different sizes in the Vero series: Vero 10, Vero 13, Vero 18, and Vero 29; the number reflects the size of the Light Emitting Surface. Of these 4, the 18 and 29 models are most popular. While these COBs are not as efficient as the Crees, they still put out a lot of light (at higher currents) and are significantly less expensive.
The Citizen COBs that most growers are using are the Version 6 CLU048 units. They come in a few different configurations like the CLU048-1212 (contains 12 diodes in parallel and 12 in series) or the CLU048-1818 (18 in parallel, 18 in series). There is also a larger model which runs at a considerably higher voltage but puts out a ton of light: the CLU058.
Important Specifications
Aside from cost, there are a handful of important specifications that you’ll need to consider when choosing your COB. I suggest you read through the points below, then when you have a better understanding of these few specs, read this post on how to easily compare COB LEDs using manufacturer-provided simulation spreadsheets.
This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish.AcceptRead More
Privacy & Cookies Policy
Privacy Overview
This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.