Like I think was mentioned before ... get a SWG sized for 60k and you will be fine.
IMO, the larger the pool, the more attractive a SWG becomes because otherwise you will have to be buying a LOT of bleach ... it would be very reasonable to assume that you would need to add 1 gallon of 10% bleach daily ... $3 per gallon * 30 days = $90 / month for just the required chlorine, not counting the gas to go buy it and the energy to move it all around and the piles of bottles in the recycling bin ...
IMO, the larger the pool, the more attractive a SWG becomes because otherwise you will have to be buying a LOT of bleach ... it would be very reasonable to assume that you would need to add 1 gallon of 10% bleach daily ... $3 per gallon * 30 days = $90 / month for just the required chlorine, not counting the gas to go buy it and the energy to move it all around and the piles of bottles in the recycling bin ...