06-13-2019, 06:34 AM
Join Date: Apr 2005
Location: Brentwood, CA, USA
iTrader Positive Rating: 100%
| | Re: What am I dealing with here?
If the light is now 13 inches from the substrate, then I assume it was 18 inches from the substrate before.
These charts give you a good idea about how much the PAR changes with that change in distance. I would interpret the charts to mean that your PAR went from about 50 to about 80, at maximum intensity. That is a very significant increase in intensity. But, I don't know how to guess the PAR when you adjust it to 50%, for example. I don't know if the PAR drops by 50% or if that is just a way to set the intensity to the same value each time you adjust it to 50%. I haven't seen where anyone measured the PAR vs the setting.