Did a little experiment w/ my RJ-60 last night.
Pool volume: 14,000
Salinity: 3400 (Taylor Test) 4000 (RJ Readout "average")
Pool Temp: 84
CYA: 70
I ran the SWCG at 100% for 12 hours (8p-8a) and had a FC increase of 4.5 PPM (8.5 FC to 13.0 FC).
Using the SWCG calculator located
here, it estimates that it should produce 26.1 FC @ 100% over 24 hours...and well, my 4.5 over 12 hours is NO WHERE near that, it's closer to 34% of the "predicted" production number.
I do understand that there are some variables I can't account for, but I can't fathom what variable would make up for 8.55 *additional* PPM of FC I should be seeing. I didn't do an OCLT prior to the test, but my FC has been running pretty high and when I did an OCLT a week ago, I passed with flying colors.
All I can say is that I am happy my pool is as small as it is. I can run the SWCG for a fairly short period and keep up with the FC demand but I could see how there could be issues for someone that had a 30,000+ gallon pool!
I will edit this tomorrow when I determine what my chlorine demand is right now.