Thanks for the info.
We take our manufacturer's submitted data and our Apogee readings and average them. Both readings are near identical but we find it fair to take the averages. I'm assuming you are recording higher PAR because your readings are being recorded through water?
And Jester, sorry for the threadjack ...if you have any questions about the Finnex fixture, please let me know. Finnex, BML, Current, and others... it's a great time to be an end user with all these strong lighting choices these great companies have available now.