Thanks, looks like I was pretty close on my volume calcualtion.

Pump runs 2X a day combined 8-10 hours.

Water Temp is probably about 90 degrees at the warmest but would not maintain that level without heater. Gets cool at night and not a lot of direct sun on the pool.

Under heaviest period 10 -12 people (weekends). Average is aobut 1/2 that.

Outdoor pool, no fountains or slides.

If mfg rating is 7X24 is it reasonable to cut the rating in half?
Then would two 25 - 30,000 rated cells be more appropriate?

Is installation the same?

Darn, large pools! Maybe I better price 2 of these and see what I am getting into. I might be falling into Carl's camp
Also, might be best to speak directly with a rep from Auto Pilot.

thanks for the feedback.