Dayummmn, that's some serious photon saturation there.... Id have to say you're in need of some sort of light measuring device to find the proper light level. I've never used one of the LUX apps on a smartphone, but Ive heard of others using them.....
I have a $25 Ebay "Dr. Meter" LUX device, that I use for my builds. Ive taken some grows up to 60,000 LUX without any adverse effect, but I dunno if that meter is really that accurate, its just a tool for RELATIVE light measurement in my spaces.....