GROWING WITH LED – If to LED, how to do it?

 
 

In the last article we briefly discussed some issues over different phi­losophies concerning the manufacturing of LED panels. In this article, we’ll briefly discuss how different LEDs can be used in different ways, and we’ll take a look at four interesting models that are currently available in the market.

The mistake most growers do regarding LED lights is assuming that by just chang­ing their lights, everything else should remain the same. This is definitely not so. Most people try to accommodate new lights into their already existing grows neglecting the fact that the change they are undertaking into their grow space is the most major one.

The problem is being exacerbated as a lot of people are really confused over the subject of LED Super Skunk AutofloweringGROWING WITH LED 01 panels. Hobbyists but also industry professionals, are ready to confer opinions without having even tried to grow with LEDs, just by having red some­where or because someone sometime told them that they are inefficient. We could go along with that argument, then again we’d have to say that the MacBook Pro where I’m currently writing this article is a piece of crap just because back in ‘99 I bought a pentium II at 300 GHz for 1,200 quid! Well guess what, technology does move forward, just take a look at your mobile phone!

Passive and active cooling.

Passive cooling will suit the micro-grow­er, the one who’s using an area of about one square meter or less. Passive cooling means that there is no GROWING WITH LED 05need for sufficient headroom where the fans will be directing the heat, instead will be easily dissipated into the environment and will be absorbed by the typical ventilation that’s required anyway. The suggested setup for this type of grower would be numerous panels of low wattage spread around in the grow­tent/area to cover the plants at a close distance. For such a grow, the preferred design would be a nice heatsink with a simple circuit board on top of it, nicely bolted obviously in order to have good contact between the circuit board and the heatsink, over which board are positioned the LED lights, single or maximum 3 watt diodes either without lenses or with wide angle lenses in order to avoid concentra­tion of light and have a much better diffu­sion on the spectrum.

GROWING WITH LED 02Growers that utilise more space have more options in hand. Obviously they can also use passive cooling panels however that might prove be quite a drag for them. Covering a large space with the type of panels I’ve mentioned above will be quite a lot of work and things might go out of hand. However by utilizing larger space and having larger headroom they can go for larger wattage on their panels, with 3 or even 5 watt diodes and active cooling provided they have also sufficient head­room and some increased air circulation in their grow area. In fact it’s still the same approach as the micro-grower however on a larger scale that allows for more watts per panel and active cooling on the panels.

GROWING WITH LED 06What’s currently in the market.

From my research I have noted the follow­ing products to be quite promising; they all show some interesting features and they carry the most trustworthy promises.

The Culturelux M30 model comes from the Austrian company SANlight. At 30W power they follow the philosophy I have described earlier; spread out light that covers the entire grow-area instead of a focused light source. The graphs that they provide on their site are perfectly describing this approach. Numerous panels spread over GROWING WITH LED 03an area covering the plants from a close dis­tance. Talking to them, I found out that it’s young company founded by two lads while at university study­ing applied science. No surprise there, new companies will be the ones push­ing the barriers into further innova­tion while challenging our percep­tions about growing. Another plus on their product is that it’s manufactured in Austria; keeping production local is always positive.

Hand in hand with SANlight are also the Greek DIY-ers of Astir Grows. I say hand-in-hand as without any of the two knowing that, they’ve been run­ning parallel lives. Astir Grows offers hand-made panels with no lenses and the largest heatsink I’ve ever seen being used, specially for the small wattage of their panels. Special kudos to their team for promoting people towards manufacturing their own panels and they share their research online. As a member of their team writes “we’re just a bunch of growers from Greece that came together to make a better light for us; we went commercial just because we shared our grows online and other people showed interest so we thought

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