My husband and I just received our pool shipment and have been preparing to install in the next couple of weeks. My TF-100 test kit, and SWG should arrive this coming week. My question is with startup. We will be filling with well water that passes through a water softener (filters out our Iron), and have been advised to only fill the pool during the day to allow the softener time to backflush in the evenings. This will result in a longer fill time. I'm wondering if we are supposed to wait until the pool is completely full and have the equipment running prior to testing the water and chlorinating or should we begin chlorinating whatever water is in the pool sooner?