Rk,
What is the purpose of the 7 hours at 2200?? Not saying it is wrong, just curious..
The 25% increase is a generic guide line, that applies to all kinds of pools, all types of filters, all types of pumps, etc.. It should not overrule common sense.
I have a couple of smaller DE filters, at rent houses, that I only open and clean twice a year. Even at the end of my six month period, I still can't tell any difference in the amount of water returning to the pool...
I suspect your UV system is your choke point as I don't see a heater in your signature..
Thanks,
Jim R.