Actually, it seems like some computer water cooling systems use a Peltier to cool the water. Perhaps it makes more sense because water holds heat better, so the lower efficiency of the Peltier isn't as significant? For a computer, the chips are not constantly running at full charge and the benefits...

What are you thinking aboot for variables for your spectrum testing? There are many things you could test for. I'm not really investing accurate parameters. At this time i would like to try supplement 5700k cool white bridgelux eb strips with far-red. Then compare to a deep-red supplementation too,...

I've seen a few cheap Peltier coolers around the internet and it's got me wondering if it might be worthwhile for active LED cooling on a small scale? I know they're not terribly efficient, but it seems they work fairly well for computers, so perhaps they would work for small grow areas? Any though...

Ok, if I got it the wrong way around, that would mean 660nm then? 660 and 730 are the frequencies that handle pfr/pf rates, so they 'fight' each other? So if I'm using 90cri, does that mean I would need to add even more 660nm to compensate for the far red, compared to 80cri? Or would it be more com...

The ambiguity on far-red, i think got 3 origins: first the emerson effect, we don't really care a lot about that because its effect is minimal. Marketing around emerson effect make people lost the first goal of the spectrum optimisation. second is the ambiguity of phytochromes responses: a high Pfr...

As i was already talking about this topic in another thread, i'll just quote myself :mrgreen: Also, it's fun as every time i'm advising to be carefull with the deep red in flowering stage, people are asking me for evidences. But is there any evidence of the opposite? I mean everyone is using the dee...

I've been ordering like 20times at digikey but never had any trouble, tho i'm only ordering stuff that is already in stock Will certainly try to be ready when the new samsung horticultural range arrives. Leaves a moment to collect friends into a group buy :) Are you talking about the new H-serie?

Its considered constant voltage because it provides the same voltage for however many strips you wire in parallel, and it splits the amps between the strips. Unlike the constant current series wiring, where it supplies all the voltage of the strips combined at the constant current range. You also c...

Thx for your answer. If i understand well, the voltage is adjusting a bit right? Because the led got a very define voltage. Do you know approximately the range of auto-adjust a cv+cc driver can provide? http://ledgardener.com/driver-reference-sheet/ Here is the reference sheet for drivers. Spec she...

I like them because its easier to load the driver to 100%. I always feel a CC driver has some wasted potential as you can never match the load to the max voltage output. They're also a good option if you want to scale up your light over time. Start with three cobs. Then go to four then to five. The...