Awesome tangent!Tangent but I happened to rent an Apogee MQ-510 for $20 from local reefer last weekend and Saxby setting was one of multiple that I tested in my tank.
I expected Saxby setting to be HIGH PAR since, as you said, it's for higher end lights on HUGE system vs my 40 breeder with 2x AI Prime 16 HD.
Saxby settings at peak (as downloaded from AI) actually weren't very high in my tank (100-160 PAR in most of the tank).
*I assume it's because same percentage intensity on AI Prime is lower output than same percentage on his stronger lights.
I agree that BRS video is good place to start and also reminder (which someone else already posted) that 2 finger drag in myAI app to raise/lower intensity is quick and useful.
Again, Its all relative to fixture wattage rating, not really the schedule itself. 50% on a hydra 52/26 vs 50% on a prime is where the difference lies. So you assume correctly.
Fwiw David Saxby ran only non HD hydra 52s over his tank at one point with the same settings. I could only assume less par even though the schedules intensity remained the same lol.