Does light bouncing off my front glass increase par?

[xxoczukxx]

To preface im running two xr30 g5 blues and an xr15 g5 pro all on AB+ at 100% on my tank.

Borrowed a par meter and im reading 300-400 on the middle to top of my rockwork which is basically centered under my lighting or slightly offset but when i measure par at my frag rack next to the glass, i was surprised to see it over 500.

Is this inflated number due to the light reflecting off the glass back into the meter and should i treat it as if it is that high or is it just inflated without actually being that high?

 

[TX_REEF]

yes, light reflecting off the glass does increase PAR to some extent depending on the angle/location of the PAR reading. It is useable light energy despite being reflected off the glass.

 

[xxoczukxx]

yes, light reflecting off the glass does increase PAR to some extent depending on the angle/location of the PAR reading. It is useable light energy despite being reflected off the glass.

Perfect and exactly what i needed to confirm. Thank you.