Papa_Tanswered grow question 4y ago Apogee MQ-500. It’s the best on the market and it’s helli expensive. I know because I have one. 🤣
If you’re serious about growing and money isn’t an issue get this one.
If you like doing math and being 20-30% off then get a lux meter and do some conversions. But it’s accuracy over many spectrums and set up configuration will not be accurate.
Check out Bruce Bugsby on the Apogee YouTube channel. They have a few videos about the MQ-500 PAR meter, how to use it and it’s benefits.
Hope that answers your question.
Cheers and happy growing.