I'd like to mix some Ir/uv-a

[Cannadaled]

https://www.rapidled.com/4-photo-far-re ... t-led-kit/

Or is it snake oil?

[majorana]

http://www.solacure.com/exuvandca.html

They have most of the jargon right, but no actual data, let alone peer-reviewed research to point at. Without the numbers it's merely a hypothesis (at least the Emerson effect has actually been proven.) Or in other words still, their salesmanship is artful, but you're buying a cat in a sack.

[Ted]

https://www.rapidled.com/4-photo-far-re ... t-led-kit/

Or is it snake oil?

The far red effect on photosynthesis and how much you would need to make a difference is debatable, but using them as a flower initiator is not. It does depend on the strain, but Ive had no problem initiating flowering with a 13.5/10.5 light cycle. At the end of the day, more light is better than less light.

[Grower]

I thought about adding UV light too but the chepest way by now is getting some T5 uv I think, at least u get both uva and uvb.
Leds are pricy

[Shkronis]

Ditch that IR idea and get deep red and far red instead.

[Shkronis]

https://www.rapidled.com/4-photo-far-re ... t-led-kit/

Or is it snake oil?

Nope, Mike has been well known in saltwater reef community - his stuff are legit, not the highest bins, but prices are very good and customer service is on top.
I will be getting this kits without heat sink to supplement my strips