Not really (at a guess). You should be able to rig up something like I described with a Raspberry Pi and some components to do the actual on/off cyclings. Actually, an Arduino would probably be technically more straightforward due to the hardware, but you can quickly - and easily - install a flavor of Debian linux (et cetera) on a Raspberry Pi, and then you've already got tens of thousands of things you can install onto it.
Shame about the LED technology not being likely to handle the quick-cycling (which is as I suspected).
That sativa on the right appears to be screaming for more light. Hopefully, the new addition will help a lot.
Never saw, heard, or read of one of those. 750-watt HPS, OtOH... (NOT the best choice for grow lighting, IMHO, but they do exist (as do 1,500-watt ones, lol).)
Wow. The only things I've been doing for 30 years are smoking (various things) and, every now and then, getting my ashes hauled.
I'd guess you've seen most every type and combination of lighting by now.
She told me
Think it over
Take it easy
Don't just go and throw your life away
Take it easy
Think it over
Don't forget what your momma said
It's too cold in the winter
It's too cold in the winter
Lord save the sinners
It's too cold in the winter
Too cold in the winter
Too cold in the winter
When you see those skies are grey
And you take your blues away
And when you see that cold wind blow
And you got down to your soul
Too cold
Hmm... Yeah, that sounds like a perfect fit for a two flowering room "flip ballast HID setup." Place them side by side, have each venting into the other, run the ballasts (one set for both rooms) off a flip relay set, and each will provide needed heat during the other's dark period. The ballasts run 24 hours per day, powering each room for 12 hours per.
I love the cold and hate the heat as much as any sane individual should, lol - but if he's THAT far north... Hey, DeVille, what's your cost per kWh?
Awesome! My... familial duties took twice as long as expected today, so I'm a few hours behind. But mine will go live within the next several hours. I'll post a link in this thread when I create it.
Was about to ask you what sort of thing you were looking for - then I realized you meant you'd already ordered some and they just haven't arrived yet, lol.
It might be a good idea to mention that when lights go out and the grow room cools, the relative humidity can spike (as the air can no longer hold the same amount of moisture - but the same amount of moisture is still in it) if the grow is set up with the ventilation/extraction fans running off the same timer that the lights are being run through. I think that may have caused some harm to growers once in a while (probably more with mold issues than anything else, but possibly issues with the hardware, too).
I've had the chance to see lots of pictures of burnt out Epistar diodes in a thread hereabouts, during the last several years. Some might consider such things to be an issue, too
.
works wonders. During the summer months I disconnect them from each other and let them vent directly out into the garage. 
