Lux meter

[Jeremy Blaze]

I know par is whats really important.

Is a lux meter at all useful? Are lux readings of any value?

 

[Felixc395]

There is a specific way to change lux to PAR, but it's a little complicated. I'll see if I can dig up a link...

But otherwise, I would buy a lux meter to make sure that my light output matches my LFS's output over their tanks. Just incase, because my corals don't like to be fried!

 

[coralreefnc]

any more info. can u use Halude and LED with LuX Meter?

 

[TheFishMan65]

Lux is output seen by eyes and it heavy on the green.
PAR is useful light for photosynthesis. Any formula is a guess since it depends on the proportion of the different wavelengths involved. But LUX is better than nothing.

Do you own a LUX meter, PAR meter, or a multi meter? You can get a PAR sensor for about $150 and hook it up to a standard multimeter use a conversion and voila PAR numbers.

 

[Jeremy Blaze]

I own a Hanna Lux meter.

 

[TheFishMan65]

Then IMHO the best bet is to measure LUX and use your eyes to determine if the spectrum is the same or close. Even a PAR meter is not perfect since you could measure a red light and adjust a blue light to have the same PAR. Same PAR, but the coral will be happier and blue and algae under red.

Sorry I don't have a better answer for you. Maybe someone else will have a better idea.

 

[Hujoweforum]

Lux to par conversion = Lux x .0111 +1.53.