Light meter…

why do you think you need a light meter?

 

I use a Dr.Lux meter and kinda rely on it nowadays. They cost about $40 or so.

 

something like this . Good enough Im surprised more people wont use them.

 

Did you ever test that app from the other thread?

 

The DR Lux meter works very well on Spder Farmer style led lights for measuring lux. There are formulas for converting lux to par if you need it. I run hlg with samsung 301h at 120w per board and find that 30,000 lux is a good safe base range. You can go much higher, but not much lower.

 

I did download it . For some strange reason it did not work. I later installed it onto a different phone. It did not give me the different colors only how bright the light is. I did install it onto a iphone 12 and a android.
Idk i made sure the app was updated . After trying it just said ow well. Yea i was interested in seeing a few of my lights with it . We are talking about the migrow app correct .

 

This is the one I use
Light Meter, lux Meter AP-881E Recording Light Meter for Plants with Display 3999(Range from 1～300,000Lux), Lux/Fc Unit, MAX/MIN, Back Light, Data Hold, Data Storage https://a.co/d/9O5IsPK

 

i will download lightspectrum pro evo costs 2.99 it will measure spectrum. looks good.

 

The one I own and do not use very often is Sun Systems Par meter. Fairly expensive and collecting dust for the most part.

 

Some of the best tools you have in your box you never need to use. Lol when you need to use them you know shit really hit the fan. My experience .

 

the fact you got an LED implies you need a PAR meter that reads PPFD not lux or lumen,
I do have a Lux meter im good with math Im told lol, tho Par meters can be costly migrow(YT) have the cheapest

good luck