LED's & Par?

[MizTanks]

Can someone explain to me how a par reading of 250 from LED's could burn corals but a Par reading of 400 from T5's won't?

[Dmmz]

Wish I knew more about lighting and could help you but I have no idea hopefully somebody can help you out

[Tom@HaslettMI]

Here's an article I just found... I just skimmed it but it looks like different meters can read high or low depending on the LED spectrum.

Aquarium Equipment: PAR Meters and LEDs - How Accurate are the Measurements? A Comparison of Three Meters and Lux to PAR Conversion Factors for LEDs — Advanced Aquarist | Aquarist Magazine and Blog

[MizTanks]

Awesome Tom! Thanks When another reefer said this happened to him, while using my same lights. I became concerned. Me having no way to measure my par, pur or lux, know what I mean?

[MizTanks]

Bummer...the link doesn't work

[Dmmz]

Works for me

[MizTanks]

It takes me to the sight but then right away it leaves and I get this message.

SECURITY WARNING: Please treat the URL above as you would your password and do not share it with anyone. See the Facebook Help Center for more information.

[Dmmz]

That is weird I am using my phone so it is probably differnt

[Tom@HaslettMI]

Bummer...the link doesn't work

I think I just Bing searched "reef LED PAR measurements" or similar. May be that will get you into the page.

[MizTanks]

Ok. I did find another sight that I found to be very very helpful. In that it explains pretty much what light is actually useful to my corals.
https://reefledlights.com/ledmytank/