You can also just add a bit more chlorine in advance of pool parties to preclude problems. An extra 3-5 ppm won't hurt the suits or the kids(especially with 50 ppm CYA) and will probably keep the water from clouding. You'd need to add a little over 1.5 gallons (218 oz.) of 6% bleach to raise your FC by 3 ppm. That will also take a little strain off your SWG cell.