This is almost meaningless since not many tanks are running as permanent "dry starts" ... perhaps this is some sort of misprint ...PAR at 400mm in air is 61 uEinsteins/sec/m2,
PAR through water will be very different
This is almost meaningless since not many tanks are running as permanent "dry starts" ... perhaps this is some sort of misprint ...PAR at 400mm in air is 61 uEinsteins/sec/m2,