that test was worthless,
and any professional in the scientific community would tell you the same...
I've got absolutely no problem with your skimmerless tank, I'm sure it will work,
i just take issue with these broad, unproven statements/comparisons about skimming...
complete anecdotal conjecture, with a smidgen of meaningless, high school level lab work thrown in...
the fact that you posted it and used it somewhat as motivation for the thread is where you derailed your own thread...
you should have just left the skimmers out of it and done your experiment....
i am actually curious as anybody to see the results of your skimmerless tank.
i had many myself in the 90's for soft coral that were totally natural or refugium filtered, so i know it can be done.
the nutrients have to leave the system somehow, and I'm curious how much of the work
is actually being done by the live rock, sand, and weekly 25% wc, versus your 60x mechanical filtration.