i am having a problem with a small fiberglass pool [8500 gal] that has a very high bather load [6 +] almost daily. has an inline chlorinator, solar heat system [which they insist on kepping at 90 degrees +] 3/4 horse pump [running 8 hours per day] and small cartridge filter.
when i started taking care of the pool i had phosphate reading of almost 1000ppb. i now have the phosphates under 50ppb. the tabs worked great but i am now getting up about 90 ppm cya. liquid chlorine will not last a week with the high bather load. i am getting mustard algae 2-3 days after my weekly visit.
i am trying to figure out how to end the cycle of bringing my cya high and having to dump some water. i thought the pool rx system sounded like an answer but after a little research its not sounding like a good idea.
any suggestions on an altenate method for caring for this pool? any help will be greatly appreciated. thank you.