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you're* You nailed it, very true. Born breech.

Not true. I said Fr is not for photosynthesis. And went on to mention photomorphogenics. Meaning there are many other aspects to far red, far from insignificant. Nothing may have been the wrong word. It certainly has an effect on electron transport and secondary metabolites. I certainly...

Yes I am very familiar with those aspects of Fr. Old news. Very old news. The terpenoids, flavonoids, phenylpropanoids, and the other secondary metabolites are much more interesting aspects of phytochromes and .photomorphogenics. I was 2 years old when Emmerson wrote the Dependence of...

The OSRAM hyper red peaks at 660nm and Cree's photo red peaks at 650nm. Both are narrow band and drop to zero before 700nm. Hyper red is a little more efficient than photo red. For deep red I use OSRAM hyper red. In this graph from a graduate level textbook that is considered the plant...

I wish it was 650nm. I don't think the perception thing will fool the plants tough. Until then the solution to a flower LED maybe the Luxeon HE 90 CRI. It is 154 lm/W whereas the Samsung LM561 3000K 90 CRI is 130lm/W. 154lm/W is very good for a very red spectrum. Obviously this Duris LED...

Does the color of this LED look orange or red? Is the wavelength say 620nm? What is the dominant wavelength? (second image) If you map the crominicity coordinates it's much closer to 620nm than 650nm. 650nm is on the very tip of the red area. _______________________________________...

620nm

You are going to need a bigger heatsink with the double row. Two single row are only about $3 more than the double. I would go with two single row for less heat and better uniformity. And I would go with BX Gen2 for the same reason plus a fraction of a cent less per lumen.

You linked to an orange 620nm. It does not appear to be a PC LED. The Vf is about 6v likely three dice. It could be four 2v dice except the temperature curve drops 20% at 80° C indicative of a native red phosphide and not a deep blue nitride. A deep blue nitride would lose about only about...

I corrected I meant 625nm not 523nm. OSRAM does not have anything over 625nm in the Duris line. They do in the Olson SSL line and a 645nm in the Golden Dragon line. Your link did not work. True. Those are the highest efficiency deep reds. I prefer the Olson SSL 150 of the Cree. In deep...

I do not want to open that can of worms. For me personally, I will only deal with PPFD and do not care about PPF at all. That spec is useless to me.

OSRAM does not have a Duris 660nm deep red. They have a red/orange 623nm.

Where did that spec come from? Is that µmol PPF µmol/s or PPFD µmol/m²/s?

By far the F-Series and BXC Gen2 are the most efficient and lowest cost source of light. I would like to see white strips with a high CRI so supplementing these cheap lower CRI LEDs with deep red is not necessary. The reason I mentioned the HE red is becasue due to the lack of an inexpensive...

Good point. Let me rephrase. Another plus is these Bridgelux Gen 2 strips run cool. No heatsink is required. Even at full power (1400 mA) If you want to run the FB24B strips at 1.67A you will likely need a heatsink.

That should have been your first clue. Grow lights do not manufacture their own watts. Would you by a Perpetual Motion Generator to power your fixture too? Damn near every vendor on eBay and Amazon selling rechargeable batteries or grow lights are charlatans. Fraudulent liars. This sums it...

I thing so too. Going to try it my next grow with a fixture on two sides.

They are very competitive. Price/Performance BX edges Samsung by an insignificant amount. I tried both. I went with the BX Gen2 becasue they run cooler. Probably because the BX Gen2 are wider and more LEDs helps dissipate and spread the heat. I ran one board 100 mA over the 1400mA max and I...

If @hybridway2 says plants like it, it's true.

I think you should too. There is a lot to be said for making money doing what you enjoy doing. I think you would be good at it. The opportunity is there. Capital up front cost is low if using off the shelf strips. There is a market for other strips. Samsung and Bridgelux don't have a whole...