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I dont think they mean Par(or they are mistaken) and likely mean Lux. Lux is intensity, like how much calcium. Par reads how light much is good for plants and corals.On a thread about Frogspawn issues someone mentioned it. They seemed to have had decent experience working with it too. I was having trouble finding it though, which is why I just posted this. I type "par light meter" into Google play, and all sorts of things pop up.
Check this thread out.I thought it was too good to be true. It would be great though...

