UV-A Lighting 2018 opinion

[Lousybreed]

I saw a lot about the 385-400nm LED’s back in 2013ish. Wondering if anyone uses them. I saw a study that showed coral really loving the 390-455nm wavelengths. Also some anecdotal evidence that corals color up when exposed to UV-A. Thoughts?

 

[Kershaw]

I saw a lot about the 385-400nm LED’s back in 2013ish. Wondering if anyone uses them. I saw a study that showed coral really loving the 390-455nm wavelengths. Also some anecdotal evidence that corals color up when exposed to UV-A. Thoughts?

I read some where about Uv light causing coral to have certain colors become more intense and more vibrant. Had somthing to do with it acting like a sun screen. But I can’t find the artical I seen it in.

 

[Lousybreed]

Exactly. Not sure if there is anything saying that UV does anything great. I found some UV-A light bars on amazon for cheap. I ran across some that are dimmable too. https://www.amazon.com/YeeSite-Supp...light+bars&dpPl=1&dpID=31KX-PJx9EL&ref=plSrch

 

[Ron Reefman]

I have an led strip light that has 390nm UV (custom made by a commercial company) because I was interested in some of the same issues as the OP.

I found that the UV did NOT make my corals fluoresce very well on their own and that the 420nm to 450nm spectrum made the corals fluoresce much better.
I still used the UV strip for almost a year and I saw no substantial change it the colors or intensity of the colors in my corals.
I got bigger changes in color and intensity by increasing or decreasing the overall PAR and by changing the mix to more blue and less white light.

This wasn't a very scientific experiment, just my experiences as I've played with my led lighting over the past 7 years. And BTW, I've had a PAR meter since before I had leds!