I've got procyons that I combine with 20K of T5. Works beautifully. But oldmac is right, one Procyon will not replace a 400w HPS, it may possibly replace a 250w HPS.

As much as I like my Procyons, I know they are not perfect with the flowering bands, meaning I try to add some kind of supplimental light in those missing areas.

I sometimes run the early part of bloom under LEDs only, to control temps. This was due to a thread where Stinky (I think) discussed stretch during flower and what part temperature and color have on that stretch. I add T5s later in bloom when temp. is not as critical.

I haven't tried the UFO knockoffs, but would not hesitate to try one. I personally would look for the latest generation tri-band with orange added. But, I haven't done my homework on LEDs lately.
crabbyback Reviewed by crabbyback 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