Originally Posted by Virc003
Something else to add, I noticed something interesting involving the front glass of the tank. It seemed as though the glass would
reflect light back into the tank. Meaning I measured higher par values as I moved the sensor closer to the glass. If someone would confirm this, I would appreciate it. I'm not entirely sure my reflector aims straight down, so it might have something to do with this as well.
I have been doing a lot of reading on PAR measurements lately and have seen more than one person make the same observation.
For the sake of consistency people should probably try to take readings close to the center of the tank away from the glass.