I have owned 2 Procyons that I used for vegging and keeping my mom plants happy. And they worked very well at that for at least 6 months, but I decided to experiment with them for flowering after seeing WT's grow log. They worked very well at it, much better then I had thought was possible when I bought them. Down side is cost like you point out.

The UFO knockoffs, such as Weezard got and uses, seem to work very well for him, and the price makes it a very attractive as an alternative to the procyon (please forgive me Ryan).

Ledtime has come up with a great idea in getting LED lights made to his specs and at a good price I might add. This also seems like a good cost per unit deal vs. procyon.

The best way I've found to compensate for the lack of light penertration is to grow SOG style plants abt 18" or less. You just need to pack more of them in the space you have (it's all about a continuous canopy). Sure maybe you'll only get 5 grams/plant or so starting out, but if you had a 4x4 space with 138plants.....thats 690 grams (1 1/2#). And with a little tuning, and extras like CO2 and Liquid Light, you could get 7-8 gr/plant.

I have found that even 2- TI ProBlooms are not quite enough to cover a 4'x4' area and thats 660watts of LED. I am currently experimenting with an additional 340w of 4' T5s to create a hybred light for a total of 1000watts, I don't like it cause the mix of the two is not great. Outer rows see T5 only, center sees LED mostly and a few rows get a mix. My next experiment is to use the 2 TIs together on a light rail to try and spread out light distribution.
BTW the hybred LED/T5 kicks the ass of a 1000w HPS in side by side trails.

Sorry, did not mean to go on so long. I'm old and it's late and I'm ramblin'.
Just need to add this, IMHO a procyon 100 or 90w UFO can not and will not replace a 400w HPS. Output of the procyon is closer to a 400w MH (and that's pushing it) and a UFO even less.
oldmac Reviewed by oldmac on . Procyon vs UFO LED Hello and hi, Does any kind gardener have the scoop on this here comparison? What I'd like to know is how these much more affordable 90W UFO's compare with the much more expensive Procyon 100's. While I do expect the Procyon's to outperform their lesser competitor, perhaps this 'lesser' is not so less? I don't expect anyone to give an answer who has done a scientific, side by side experiment in a NASA laboratory, but any advice from some UFO experienced growers would be thirstily Rating: 5