Hey fellow green thumbs ,

My first run with a new light , Medigrow Sun v2 - 320w . In a 2x2 tent . This light is more for 4x4 or 3x3 so I'm running 40%.

When I initially measured the lights PPFD, Photone app reported 1850 PPFD . Then , a month or so ( and a phone update ) later , the Photone app measures PFFD at 580. I then try 3 more high end phones, all measures around 400-600 PPFD .
(Taking these PFFD values from photone with a pinch of salt )

Reviewing Medic Grow's website , The Grow Light ;

Specs​

Model: MINI SUN-2
Wattage: 320 Watts
PPFD (PAR Value): 2385μmol/m2/s @ 6‘’(15.2cm) in height
PPF(light output): 896 μmol/s
Efficacy: 2.8 μmol/J @277 AC

Not sure how to go about troubleshooting . I do not have any tools to see how many watts it is pulling from the wall.

On these screen shot below , the higher value has a ! mark ... Hoping some Photone Users can chime in.
Hopefully I'm overlooking something silly

Thanks for any input !